KR102719702B1 - Fault Detecting System for Water Supply and Drainage Facilities - Google Patents

Abstract

The abnormality detection system of a water supply and drainage facility of the present invention is characterized by including: a water level detection sensor (10) installed in a water supply or drainage system of a water supply and drainage facility; a timer (20) that operates the water level detection sensor (10) at regular time intervals so that a change in water level during a regular time interval is detected by the water level detection sensor (10); a control unit (30) that monitors an abnormality of a water supply or drainage system in real time by using water level change data during a regular time interval detected by the water level detection sensor (10) operated by the timer (20); and a notification unit (40) that is operated by the control unit (30) and notifies an abnormality of a water supply or drainage system by the control unit (30).

Description

{Fault Detecting System for Water Supply and Drainage Facilities}

The present invention relates to an abnormality detection system for water supply and drainage facilities that detects abnormalities such as leakage and blockage in water supply and drainage facilities to enable efficient management.

In general, water supply and drainage facilities are facilities used for the purpose of water supply and drainage.

In the case of water supply facilities, water tanks are often used to establish a stable water supply system and to solve drinking water problems in emergencies. In particular, water tanks are equipped with water level detection sensors to detect the water level supplied from the water supply pipe to the water tank, thereby maintaining a certain water level.

At this time, the water level detection sensor used supplies water to the water tank until the highest water level supplied to the water tank is detected, and blocks the supply of water to the water tank when the highest water level is detected.

A water supply facility configured as described above has a problem in that if an abnormality such as a water leak or low water pressure occurs, the highest water level cannot be detected and water must be continuously supplied, and if the water supply pipe is blocked, it is difficult to detect an abnormality.

Meanwhile, in the case of drainage facilities, drainage is mainly done using drain pipes, and a siphon-type trap (water stopper) is usually installed to prevent the backflow of odors or gases.

Examples of uses for siphon traps include sink and toilet drains.

These drainage devices use water level sensors to measure the level of the drained water and detect blockages.

However, these water level detection sensors have the problem that it is difficult to determine the degree of blockage when the drainage facility is blocked.

Let me explain using a toilet as an example.

In general, toilets store a certain amount of water in the toilet bowl to prevent foul odors from the sewage discharge outlet and to ensure smooth washing of sewage, and the bowl is washed by supplying wash water.

These toilets are connected to a drain pipe to discharge waste water to the outside, and are connected to a waste water discharge section that discharges waste water inside the toilet bowl to discharge waste water to the outside of the toilet.

However, when these sewage discharge points become clogged, they produce a foul odor and the water does not drain into the drain.

In particular, if the sewage discharge section is a siphon trap that discharges sewage outside the toilet by pressure difference, foreign substances can easily accumulate and cause blockage.

A siphon trap is usually shaped like an inverted U or S and uses the siphon principle to cause the remaining wastewater contained in the bowl (3) to be sucked out and discharged by the negative pressure generated when the wastewater contained in the bowl (3) is discharged.

When a toilet is clogged, it causes a lot of inconvenience because it is impossible to use the toilet. In particular, when a toilet in a public restroom is clogged, it causes inconvenience to many users.

In cases where the toilet is severely clogged, the amount of sewage that fills up the bowl that stores a certain amount of water at the time of sewage discharge can be confirmed, so the toilet manager or someone can visit the toilet in person to check if the toilet is clogged, or the user can notify the toilet manager that the toilet is clogged to clear the clog.

On the other hand, when the degree of clogging in the toilet is minor, it is difficult to confirm that the sewage has filled up in the bowl that stores a certain amount of water at the time of sewage discharge, and in many cases, the sewage is discharged slowly over time after sewage discharge, making it difficult for restroom managers to confirm that the toilet is clogged, and they may not be able to prevent it from being used by other users, which may cause problems such as sewage overflowing from the bowl.

An example of a technology for detecting clogging in a toilet is disclosed in Korean Patent Publication No. 10-2018-0135378 (Title: Toilet overflow prevention device and advance notification).

The above toilet overflow prevention device is characterized by including a toilet clogging detection means for detecting whether the drain of the toilet body is clogged; an on-off valve installed on a water supply line for supplying water necessary for treating waste inside the toilet body; and a control unit for operating the on-off valve to stop the water supply when a detection signal is input from the toilet clogging detection means.

At this time, the toilet clogging detection means may be configured with one or more water level sensors that detect whether the water level inside the toilet body has reached a certain height.

This toilet clogging detection means can be useful because it can detect clogging when the degree of clogging in the toilet is large and the waste reaches a certain level or higher. However, when the degree of clogging in the toilet is small, the waste may not reach a certain level or higher, making it difficult to detect clogging. This may result in the failure to prevent other users from using the toilet and in problems such as waste overflowing from the bowl causing clogging in the toilet. In addition, the toilet clogging detection means has a problem in that it malfunctions when water for cleaning is added to the bowl containing the waste water, because the toilet is detected to be clogged.

Another example of a technology for detecting clogging in a toilet is Korean Patent Registration No. 10-2037184 (Title of the invention: Toilet clogging detection sensor and IoT toilet management system including the same).

A toilet clogging detection sensor used in the above system includes: a first ultrasonic transmitter for transmitting a first ultrasonic wave to a first specific location inside a toilet installed in a toilet; a first reflection wave receiver for receiving a first reflection wave in which the first ultrasonic wave is reflected; a toilet clogging determination unit for measuring a time for transmitting the first ultrasonic wave and a time for receiving the first reflection wave, and comparing a first measurement time from the time the first ultrasonic wave is transmitted until the time the first reflection wave is received with a first reference time stored in advance, and determining that the toilet is clogged if the first measurement time deviates from the first reference time; and a first communication unit for transmitting first information on a determination result of the toilet clogging determination unit.

The above toilet clogging detection sensor detects clogging by detecting the water level in the toilet using ultrasonic waves and the time it takes for the reflected waves to arrive.

Also, like the toilet clogging detection means described above, the toilet can be detected by detecting only the water level, but this is useful when the toilet is significantly clogged, but when the toilet is only slightly clogged, it is difficult to detect the clogging, so it cannot prevent other users from using it, and the problem of the toilet being clogged, such as sewage overflowing from the bowl, may occur. In addition, like the toilet clogging detection means described above, there is a problem that when water for cleaning is added to the bowl where sewage is stored, the toilet is detected as being clogged, causing a malfunction.

In this way, it is difficult to detect abnormalities such as water leaks and blockages using water level sensors in water supply and drainage facilities, and it is also difficult to determine the cause of the abnormality, so countermeasures are urgently needed.

Korean Patent Publication No. 10-2010-0058272 (Published on June 3, 2010) Korean Patent Registration No. 10-1036360 (announced on May 23, 2011)

The present invention has been made to solve the above problems, and the purpose of the present invention is to provide an abnormality detection system for water supply and drainage facilities, which can detect abnormalities such as water leakage and blockage by a water level detection sensor in water supply and drainage facilities, and also determine the degree of the abnormality.

Another object of the present invention is to provide a toilet drainage facility abnormality detection system capable of managing the toilet drainage facility by detecting the degree of clogging of the toilet and predicting the time of clogging, thereby preventing clogging of the toilet, which causes sewage to overflow from the bowl, in advance.

In order to achieve the above object, the present invention provides a system for detecting an abnormality in a water supply and drainage facility, comprising: a water level detection sensor (10) installed in a water supply or drainage system of a water supply and drainage facility; a timer (20) that operates the water level detection sensor (10) at regular time intervals to detect a change in water level during the regular time interval by the water level detection sensor (10); a control unit (30) that monitors an abnormal state in the water supply or drainage system in real time by using water level change data during the regular time interval detected by the water level detection sensor (10) operated by the timer (20); and a notification unit (40) that is operated by the control unit (30) and notifies an abnormal state in the water supply or drainage system by the control unit (30).

In addition, the control unit (30) is characterized in that it determines that the water supply or drainage system is in an abnormal state when the water level change detected by the water level detection sensor (10) exceeds a certain amount during the operating cycle time of the water level detection sensor (10) by the timer (20).

Meanwhile, a toilet drainage facility abnormality detection system according to the present invention detects a clogging of a toilet having a bowl (3) of a toilet that receives wastewater, and a wastewater discharge portion (5) that discharges wastewater from the bowl (3) to a floor pipe (4), the toilet drainage facility abnormality detection system comprising: a water level detection sensor (10) provided in the bowl (3) of the toilet and detecting a water level contained in the bowl (3); a timer (20) that operates the water level detection sensor (10) at regular time intervals so that a change in water level during the regular time interval is detected by the water level detection sensor (10); a control unit (30) that monitors a clogging state of the toilet in real time by using data on water level changes during the regular time intervals detected by the water level detection sensor (10) operated by the timer (20); It is characterized by including a notification unit (40) that is operated by the control unit (30) and notifies when the toilet is judged to be clogged by the control unit (30).

In addition, the operating cycle of the water level detection sensor (10) by the timer (20) is smaller than the sum of the washing time by the supply of washing water to the bowl (3), the time for discharging waste water from the bowl (3), and the time for filling the bowl (3), and the initial operation start time of the water level detection sensor (10) by the timer (20) is immediately before the washing of the bowl (3) by the supply of washing water to the bowl (3), and the final operation end time of the water level detection sensor (10) by the timer (20) is immediately after the completion of filling the bowl (3) with washing water after discharging waste water from the bowl (3).

In addition, the control unit (30) is characterized in that it determines that the toilet is clogged when the water level change detected by the water level detection sensor (10) exceeds a certain amount during the operating cycle time of the water level detection sensor (10) by the timer (20).

The abnormality detection system of the water supply and drainage facility of the present invention with the above configuration detects abnormalities such as blockages or leaks occurring in the water supply or drainage system of the water supply and drainage facility, thereby enabling efficient management of the water supply and drainage facility.

In particular, in the case of toilet drainage facilities, it is effective in detecting clogging of the toilet, which causes sewage to overflow from the bowl, and thus enables efficient management of the toilet.

In addition, even if the degree of clogging is mild and difficult to confirm with the naked eye, it is possible to predict the timing of clogging, which not only prevents clogging of the toilet in advance, but also enables efficient toilet management and maintenance personnel planning by predicting the appropriate maintenance period.

Figures 1 and 2 are drawings showing a schematic structure of an abnormality detection system for a water supply and drainage facility according to the present invention.
Figure 3 is a perspective view showing a toilet having an abnormality detection system for a toilet drainage facility according to the present invention installed.
Figure 4 is a drawing showing the internal structure of a toilet in which an abnormality detection system for a toilet drainage facility according to the present invention is installed.
Figure 5 is a drawing showing an example in which the abnormality detection system of a toilet drainage facility according to the present invention is applied to a public restroom.

Hereinafter, the abnormality detection system of the water supply and drainage facility of the present invention will be described in detail with reference to the drawings.

Figures 1 and 2 are drawings showing a schematic structure of an abnormality detection system for a water supply and drainage facility according to the present invention.

Water supply and drainage facilities are facilities used for the purpose of water supply and drainage.

The abnormality detection system of a water supply and drainage facility according to the present invention comprises a water level detection sensor (10); a timer (20); a control unit (30); and a notification unit (40).

In the description of the present invention, abnormal conditions of water supply and drainage facilities include water leakage, low water pressure, partial blockage of the water supply system (blockage due to foreign substances, scale, etc.), and blockage due to freezing in winter.

The above water level detection sensor (10) is installed in the water supply or drainage system of the water supply and drainage facility and serves to detect the water level of the fluid flowing in the water supply or drainage system of the water supply and drainage facility.

The above water level detection sensor (10) may use an ultrasonic sensor, or may use a known sensor such as an electrode sensor that detects a change in water level according to a change in resistance value measured by a microcurrent supplied to an electrode installed in a water supply or drainage system of a water supply and drainage facility.

The above timer (20) operates the water level detection sensor (10) at regular time intervals to detect changes in the water level during the regular time intervals by the water level detection sensor (10).

The above control unit (30) monitors abnormal conditions of the water supply or drainage system in real time by using water level change data for a certain time interval period detected by the water level detection sensor (10) operated by the timer (20).

The above notification unit (40) is operated by the control unit (30) and serves to notify of an abnormal condition of the water supply or drainage system by the control unit (30).

In Fig. 1, a water tank (1) is shown as a water supply facility.

A typical water tank (1) is configured such that a supply pipe (1a) is installed on one side of the upper body of the water tank (1) through which constant water is supplied into the water tank (1), and a discharge pipe (1b) is installed on one side of the lower body of the water tank (1) so that constant water stored in the water tank (1) is supplied to each household through the discharge pipe (1b). A water level detection sensor (10) is installed on the upper part of the water tank (1).

In Fig. 2, a pipe (2) is shown as a water supply and drainage facility.

A water level detection sensor (10) is provided at the upper part of the pipe (2), and the water level detection sensor (10) detects the water level of the fluid supplied or drained through the pipe (2). In the case of the pipe (2) of the water supply facility, when water is supplied, the fluid fills up in the pipe (2), and if an abnormality occurs, the fluid cannot fill up in the pipe (2), and the abnormality is detected by the water level detection sensor (10).

The abnormality detection system of the water supply and drainage facility of the present invention, configured as described above, detects the water level of the fluid flowing in the water supply or drainage system of the water supply and drainage facility by operating the water level detection sensor (10) at regular time intervals by the timer (20), and monitors abnormal conditions such as blockages and leaks in the water supply and drainage facility in real time by using the water level change data in the water supply or drainage system of the water supply and drainage facility detected by the water level detection sensor (10), thereby enabling efficient management of the water supply and drainage facility.

It is preferable that the above control unit (30) determines that there is an abnormality in the water supply or drainage system when the water level change detected by the water level detection sensor (10) exceeds a certain amount during the operating cycle of the water level detection sensor (10) by the timer (20).

FIG. 3 is a perspective view showing a toilet having an abnormality detection system for a toilet drainage facility according to the present invention installed, FIG. 4 is a drawing showing the internal structure of a toilet having an abnormality detection system for a toilet drainage facility according to the present invention installed, and FIG. 5 is a drawing showing an example where an abnormality detection system for a toilet drainage facility according to the present invention is applied to a public restroom.

Toilets are classified into direct flush and tank types according to the method of supplying flushing water to the bowl for washing waste and storing flushing water.

A flush toilet supplies water straight into the bowl of the toilet to wash away waste, and after washing, the water flows straight back into the bowl.

A cistern-type toilet supplies fresh water from a cistern to the bowl of the toilet to wash away waste and return fresh water to the bowl after washing. The drawing shows a cistern-type toilet.

The abnormality detection system of the toilet drainage facility of the present invention is applied to both a straight-flow type toilet and a tank-type toilet, and serves to detect a blockage of a toilet equipped with a bowl (3) of the toilet in which waste water is received, and a waste water discharge part (5) that discharges waste water from the bowl (3) to a floor pipe (4).

At this time, the sewage discharge unit (5) can use the sewage discharge unit disclosed in Korean Patent No. 10-2133230 (Title of invention: Ultra-low-flow toilet), and can use a known trap that uses the siphon principle to allow the remaining sewage contained in the bowl (3) to be sucked and discharged by the negative pressure generated when the sewage contained in the bowl (3) is discharged, which is usually in an inverted U-shape or S-shape.

In the drawing, the above-mentioned sewage discharge unit (5) is depicted as a trap using the siphon principle.

The abnormality detection system of a toilet drainage facility according to the present invention comprises a water level detection sensor (10); a timer (20); a control unit (30); and a notification unit (40).

The above water level detection sensor (10) is provided in the bowl (3) of the toilet and detects the water level contained in the bowl (3).

The above water level detection sensor (10) may use an ultrasonic sensor, or may use a known sensor such as an electrode sensor that detects changes in water level according to changes in resistance value measured by a microcurrent supplied to an electrode installed in the bowl (3) of the toilet.

The above timer (20) operates the water level detection sensor (10) at regular time intervals to detect changes in the water level during the regular time intervals by the water level detection sensor (10).

The above control unit (30) monitors the clogging status of the toilet in real time by using water level change data for a certain time interval detected by the water level detection sensor (10) operated by the timer (20).

The above notification unit (40) is operated by the control unit (30) and serves to notify when the control unit (30) determines that the toilet is clogged.

The abnormality detection system of the toilet drainage facility of the present invention, which has the above configuration, detects the water level of the washing water contained in the bowl (3) by operating the water level detection sensor (10) at regular time intervals by the timer (20), and monitors the clogging state of the toilet in real time using the water level change data in the bowl (3) detected by the water level detection sensor (10), thereby enabling efficient management of the toilet.

It is preferable that the above control unit (30) determines that the toilet is clogged when the water level change detected by the water level detection sensor (10) exceeds a certain amount during the operating cycle of the water level detection sensor (10) by the timer (20).

The operating cycle of the water level detection sensor (10) by the timer (20) can be set by the user, and is preferably set to be less than the sum of the washing time by supplying washing water to the bowl (3), the time for discharging waste water from the bowl (3), and the time for filling the bowl (3) with washing water.

In addition, it is preferable that the first operation start time of the water level detection sensor (10) by the timer (20) is immediately before the washing of the bowl (3) by supplying washing water to the bowl (3), and the final operation end time of the water level detection sensor (10) by the timer (20) is immediately after the filling of the bowl (3) with washing water after the discharge of waste water from the bowl (3).

The initial operation start time of the water level detection sensor (10) by the timer (20) is preferably just before the washing of the bowl (3) by supplying washing water to the bowl (3), but may be the time when the toilet user sits on the toilet, and may be the operating time for supplying washing water to the bowl (3) by a lever or push button.

In the case where the initial operation start point of the water level detection sensor (10) by the timer (20) is used as the point in time when the toilet user sits down on the toilet, the user's sitting down on the toilet is detected by the pressure detection sensor provided at the bottom of the seat on which the user sits, and when the user's sitting down is detected by the pressure detection sensor, the timer (20) is operated to control the operation of the water level detection sensor (10) to measure the water level in the bowl (3). In addition, the timer (20) operates the water level detection sensor (10) at regular time intervals from this point in time to detect changes in the water level in the bowl (3) at regular time intervals.

The water level detection sensor (10) is operated at a regular time interval of the timer (20), and the final time point of detection of the water level in the bowl (3) by the water level detection sensor (10) is selected as the time point immediately after the flushing water is completely filled into the bowl (3) after the wastewater is discharged from the bowl (3). The reason for this is that, if the degree of clogging in the toilet is severe, the clogging in the toilet can be confirmed with the naked eye, but if the degree of clogging in the toilet is mild, after the flushing water is completely filled into the bowl (3) after the wastewater is discharged from the bowl (3), the clogging in the toilet is gradually discharged from the bowl (3) and returns to the normal water level before the toilet is clogged, making it difficult to confirm the clogging in the toilet with the naked eye. Therefore, the degree of clogging in the toilet is to be accurately determined.

In addition, it is preferable that a flow sensor (50) be further provided at each of the front and rear ends of the wastewater discharge unit (5) that discharges wastewater from the bowl (3) of the toilet, and that detects the flow rate of the discharged wastewater.

At this time, it is preferable that the control unit (30) determines that there is a blockage if a certain amount of flow rate is not detected by at least one of the flow rate sensors (50) from the initial operation start time of the water level detection sensor (10) by the timer (20) to the final operation end time of the water level detection sensor (10) by the timer (20).

In addition, the control unit (30) determines the clogging location of the toilet according to the flow rate measured by the flow rate sensor (50) when determining the clogging state.

In addition, by installing flow sensors (50) at the front and rear ends of the wastewater discharge section (5) that discharges wastewater from the bowl (3) of the toilet and detecting the amount of wastewater discharged, it is possible to determine whether the wastewater discharge section (5) or the floor pipe (4) is blocked and take action accordingly.

In the case of a blockage in the sewage discharge section (5), the clog can be removed by using a known device such as a plunger that uses air pressure to clear the clogged area. In the case of a blockage in the floor pipe (4), the toilet can be dismantled to clear the clog in the floor pipe (4), allowing for quick measures.

In addition, it is preferable that the present invention further includes a pressure gauge (not shown) that measures the supply pressure of the washing water supplied to the bowl (3) of the toilet, and it is preferable that the control unit (30) sets the operating cycle of the water level detection sensor (10) by the timer (20) according to the size of the supply pressure of the washing water measured by the pressure gauge.

When the operating cycle of the water level detection sensor (10) by the timer (20) is set according to the size of the pressure measured by the pressure gauge of the supply pressure of the washing water supplied to the bowl (3) of the toilet, if the supply pressure of the washing water is large, the operating cycle of the water level detection sensor (10) by the timer (20) is made relatively short, and if the supply pressure of the washing water is small, the operating cycle of the water level detection sensor (10) by the timer (20) is made relatively long, so that the clogging of the toilet can be accurately determined by detecting a change in water level by the water level detection sensor (10).

The above-mentioned notification unit (40) of the abnormality detection system of the toilet drainage facility of the present invention can prevent the user from using the toilet by means of a warning sound or warning voice.

In particular, in the case of a toilet installed in a public restroom, the notification unit (40) can enable management of the toilet by transmitting information to a terminal (70) such as a mobile phone carried by the manager to notify the manager of a clogging of the toilet or a warning of a clogging.

At this time, in order to transmit the clogging judgment status of the toilet to a terminal such as a mobile phone carried by the manager by the control unit (30) using the water level change data signal detected by the water level detection sensor (10), a known wireless communication method such as a wireless network for a wireless LAN including a wireless LAN and some infrared communications proposed by the Institute of Electrical and Electronics Engineers (IEEE), a wireless PAN (Personal Area Network) including Bluetooth, UWB, Zigbee, etc., a wireless MAN (Metropolitan Area Network) including a Fixed Wireless Access (FWA), a Broadband Wireless Access (BWA), and a mobile Internet for a wireless MAN (Mobile Broadband Wireless Access: MBWA) including Wibro, WiMAX, LTE, etc. can be used.

The toilet drainage facility abnormality detection system of the present invention, which manages multiple public restrooms, comprises a server (60), a control unit (30) which monitors the clogging state of each toilet in real time using water level change data detected by a water level detection sensor (10) equipped in each toilet, and a water level change data communication unit (80) which transmits a water level change data signal detected by the water level detection sensor (10) to the server (60), and the server (60) transmits the clogging state of each toilet and information on the corresponding toilet to a terminal (70) carried by a manager.

In addition, the toilet is equipped with a location transmission unit (90) that transmits the location where the toilet is installed, and the location where the toilet is installed is notified to the manager by the location transmission unit (90), so that the toilet of the corresponding bathroom can be managed. The location transmission unit uses an RTK GPS module, receives a GPS signal transmitted from a satellite, and provides location data where the toilet is installed based on the longitude coordinates and latitude coordinates included in the received GPS signal. In particular, in the case of managing a multi-story building, the location data where the toilet is installed can be the same location data by the location transmission unit, and the floor number and room number are not distinguished, so that the floor number and room number where the toilet is installed are registered in advance in the server (60), so that the shared toilets of the same building can be efficiently managed.

The above server (60) receives location data transmitted from the location transmission unit and uses the blockage information determined by the control unit (30) to manage the blockage status of the toilet in real time.

The technical idea should not be interpreted limited to the above-described embodiments of the present invention. The scope of application is diverse, and various modifications can be implemented at the level of those skilled in the art without departing from the gist of the present invention claimed in the claims. Accordingly, such improvements and modifications fall within the scope of protection of the present invention as long as they are obvious to those skilled in the art.

Bowl (3)
Floor pipe (4)
Sewage discharge unit (5)
Water level sensor (10)
Control unit (30)
Notification Department (40)
Flow sensor (50)
Server (60)
Terminal (70)

Claims (7)

delete delete In a toilet drainage facility abnormality detection system that detects a clogging of a toilet equipped with a bowl (3) of a toilet that receives wastewater and a wastewater discharge portion (5) that discharges wastewater from the bowl (3) to a floor pipe (4), a water level detection sensor (10) that is equipped in the bowl (3) of the toilet and detects the water level contained in the bowl (3);
A timer (20) that operates the water level detection sensor (10) at regular time intervals so that changes in the water level during a regular time interval are detected by the water level detection sensor (10);
A control unit (30) that monitors the clogging status of a toilet in real time by using water level change data for a certain time interval period detected by the water level detection sensor (10) operated by the timer (20);
It includes a notification unit (40) that is operated by the above control unit (30) and notifies when the toilet is judged to be clogged by the above control unit (30);
The operating cycle of the water level detection sensor (10) by the timer (20) is less than the sum of the washing time by supplying washing water to the bowl (3), the time for discharging waste water from the bowl (3), and the time for filling the bowl (3).
The first operation start time of the water level detection sensor (10) by the timer (20) is immediately before the washing of the bowl (3) by supplying washing water to the bowl (3), and the final operation end time of the water level detection sensor (10) by the timer (20) is immediately after the filling of the bowl (3) with washing water after the discharge of waste water from the bowl (3).
The above control unit (30) is a toilet drainage facility abnormality detection system characterized in that it determines that the toilet is clogged when the water level change detected by the water level detection sensor (10) exceeds a certain amount during the operating cycle time of the water level detection sensor (10) by the timer (20). delete delete In the third paragraph,
A flow sensor (50) is further provided at the front and rear ends of the sewage discharge unit (5) that discharges sewage from the bowl (3) and detects the amount of sewage discharged.
The above control unit (30) is a toilet drainage facility abnormality detection system characterized in that it determines that there is a blockage if a certain amount of flow is not detected by at least one of the flow sensors (50) from the initial operation start time of the water level detection sensor (10) by the timer (20) to the final operation end time of the water level detection sensor (10) by the timer (20). In paragraph 6,
A pressure gauge is further provided to measure the supply pressure of the washing water supplied to the above bowl (3).
The above control unit (30) is a toilet drainage facility abnormality detection system characterized in that the operating cycle of the water level detection sensor (10) by the timer (20) is set according to the size of the supply pressure of the washing water measured by the pressure gauge.