KR20190010937A - System and method for displaying information about available restroom - Google Patents

Abstract

A system for displaying available toilet information according to an exemplary embodiment of the present invention includes a sensor unit for detecting whether a toilet is in use and transmitting a sensed signal to a server, a signal receiving unit for receiving a signal from the sensor, A signal for the changed information is displayed so that the available toilet information is changed so that the number of available toilet seats in the toilet is decreased by 1 and the number of available toilet seats in the toilet is increased by 1 when it is turned on, And a display unit for displaying information according to a signal received from the server.

Description

SYSTEM AND METHOD FOR DISPLAYING AVAILABLE TOILET INFORMATION [0001]

Various embodiments of the present invention are directed to a system and method for displaying information about an available toilet outside a toilet. More particularly, the present invention relates to a system and a method for displaying toilet place information on a display device existing outside a toilet so that a person who wants to use the toilet can check whether there is a place available in the toilet without directly entering the toilet .

Recent developments and popularization of small computers, such as Arduino and Raspberry Pi, in the form of a single board, are causing many changes in the information ecosystem.

Since Arduino and Raspberry Pie are made up of a single board, they are available in smaller sizes without unnecessary hardware configuration and are offered at a much lower cost than traditional computers. This provided the user with the motivation to use Arduino and Raspberry pie freely in non-critical or production-related systems. Recently, many control systems have been developed for use in various tasks of daily life including the use of household appliances using Arduino or Raspberry Pie.

In places including a lot of toilets such as department stores and baseball courts, users of toilets can not be distributed evenly, so crowded can be seen only in certain toilets. If the toilet is not used efficiently in such a way, user's inconvenience may be caused.

The present invention has been devised to solve such an inefficient toilet use problem. Various embodiments of the present invention may indicate the number of toilet seats available in the toilet outside the toilet, so that it is possible to inform the user whether the toilet can be used even if the toilet does not enter the toilet. In addition, various embodiments of the present invention can provide efficient use of the restroom by collecting toilet information of various places belonging to a specific building and providing the information to the user through a single report board.

A system for displaying available toilet information according to an exemplary embodiment of the present invention includes a sensor unit for detecting whether a toilet is in use and transmitting a sensed signal to a server, a signal receiving unit for receiving a signal from the sensor, A signal for the changed information is displayed so that the available toilet information is changed so that the number of available toilet seats in the toilet is decreased by 1 and the number of available toilet seats in the toilet is increased by 1 when it is turned on, And a display unit for displaying information according to a signal received from the server.

A method of displaying available toilet information according to an exemplary embodiment of the present invention includes the steps of sensing whether a toilet is in use and transmitting a sensed signal to a server, receiving a signal from the sensor, Changing the available toilet information so that the number of available toilet seats in the toilet is decreased by 1 when the user is in use and the number of available toilet seats in the toilet is increased by 1 when the user is off, And displaying the information on the display unit according to the signal received from the server.

The apparatus for displaying available toilet information according to an embodiment of the present invention is a device for displaying available toilet information on the basis of a signal received from the sensor unit indicating whether the toilet is in use or not and if the received signal is ON indicating that the toilet is in use, A control unit for changing the available toilet information so that the number of available toilet seats in the toilet is increased by 1 when the number is decreased and decreasing the number of available toilet seats by 1 and transmitting a signal for the changed information to the display unit, And a program for changing the available toilet information according to whether the received signal is on or off.

The system and method for displaying the available toilet information according to the embodiment of the present invention collectively provide information on the toilet bowl of various toilets belonging to a specific place and provide them to a single guide plate so as to help the user to select a toilet that can be used as quickly as possible . In addition, it is possible to prevent inefficient operation of the toilet due to the flood of people in only some of the restrooms.

1 is a configuration diagram of a system for displaying available toilet information according to an embodiment of the present invention.
2 is a block diagram of a system for displaying available toilet information in accordance with an embodiment of the present invention.
FIG. 3 is a flowchart illustrating an operation of displaying the available toilet information according to the embodiment of the present invention.
FIG. 4 is a view showing an available toilet information panel according to the first embodiment of the present invention.
FIG. 5 is a view showing an information display panel for a toilet according to a second embodiment of the present invention. FIG.
FIG. 6 is a view showing a design diagram of a toilet information display panel according to a second embodiment of the present invention.
FIG. 7 is a diagram illustrating a UI of an application for displaying available toilet information according to an embodiment of the present invention.

Best Mode for Carrying Out the Invention Various embodiments of the present invention will be described below with reference to the accompanying drawings. The various embodiments of the present invention are capable of various changes and may have various embodiments, and specific embodiments are illustrated in the drawings and the detailed description is described with reference to the drawings. It should be understood, however, that it is not intended to limit the various embodiments of the invention to the specific embodiments, but includes all changes and / or equivalents and alternatives falling within the spirit and scope of the various embodiments of the invention.

The use of "including" or "including" in various embodiments of the present invention can be used to refer to the presence of a corresponding function, operation or component, etc., which is disclosed, Components and the like.

The terminology used in the various embodiments of the present invention is used only to describe a specific embodiment and is not intended to limit the various embodiments of the present invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

1 is a block diagram showing a configuration of a system for displaying available toilet information according to an embodiment of the present invention.

As shown in FIG. 1, a system for displaying available toilet information according to an embodiment of the present invention may include a sensor unit 110, a server 100, and a display unit 120. The sensor unit 110 may include a plurality of sensors 111, 112, and 113 installed in a plurality of rest rooms. A specific sensor (for example, 111) of the sensor unit 110 can be mounted on the toilet door, and can detect the locking of the toilet door and the release of the lock. When a specific sensor (for example, 111) of the sensor unit 110 detects the inquiry of the toilet, a signal related to the lock can be transmitted to the server 100. Then, the server 100 can judge the received signal so as to control the number of toilet seats which can be used among the number of toilet seats in the restroom to be reduced by the number of times of the locking signal. That is, the server 100 may process the available toilet information and transmit it to the display unit 120 of various forms. The signal transmission method between the sensor unit 110, the server 100, and the display unit 120 may be wireless communication as well as wire communication.

2 is a block diagram of a system for displaying available toilet information in accordance with an embodiment of the present invention.

Referring to FIG. 2, the system according to an embodiment of the present invention may include a server 100, a sensor unit 110, and a display unit 120. The server 100 may include a storage unit 130 and a controller 140. Although not shown in the figure, the server 100, the sensor unit 110, and the display unit 120 may each further include a communication unit that performs a communication function.

The sensor unit 110 according to various embodiments of the present invention may include a read switch, which is a sensor that reacts when a magnet touches it. The reed switch can be installed to have a value of ON when the door of the toilet-specific compartment is locked. In addition, the sensor unit 110 is not limited to a sensor using a magnet, and may be configured in various ways. For example, when an infrared ray detection sensor is installed in each cell to turn on / off the lighting of the toilet room, the sensor constituting the sensor unit 110 may be an infrared ray detection sensor. Also, the sensor unit 110 may include a configuration for transmitting the sensed information to the server 100. For example, the sensor unit 110 may include an Arduino (a device for controlling a device incorporating a micro controller) connected to a sensor for sensing door closing information, and may connect a device such as a sensor or a component . In addition, the Arduino may further include a module for supporting a communication function when transmitting a signal to the server through wireless communication. The wireless communication may be, for example, ZigBee communication, Wi-Fi, or the like.

The server 100 according to various embodiments of the present invention may include a storage unit 130 and a controller 140 as described above. The server 100 may be a special purpose computer for handling available toilet information according to an embodiment of the present invention. For example, the server 100 may be a single board computer such as Raspberry Pi.

The storage unit 130 included in the server 100 may store a program necessary for displaying the available toilet information according to the embodiment of the present invention. The basic information constituting the program may be, for example, the total number of toilets of the building managed by the server 100, the number of toilet seats provided in each toilet, and the like. The basic information constituting the program may be a fixed word (for example, a phrase such as 'in use') displayed on the display unit 120. According to various embodiments of the present invention, the storage unit 130 may store additional image information and the like necessary for displaying available toilet information.

The control unit 140 of the server 100 may process the available toilet information according to the ON signal indicating that the toilet is in use from the sensor unit 110 according to the ON signal. The available toilet information may be the number of toilet seats currently in use or the number of available toilet seats. When the available toilet information is set according to the program setting, the control unit 140 can change the available toilet information so that the number of the used toilet is increased by one when the ON signal is received from the sensor unit 110 . On the contrary, when the OFF signal indicating that the toilet is available from the sensor unit is received, the controller 140 can change the available toilet information so that the number of the toilet in use is reduced by one.

The controller 140 may determine and process information on the number of toilet seats available to various restrooms according to various embodiments. Also, the controller 140 may determine location information (e.g., A toilet) corresponding to the signal received from the sensor unit 110. [ In addition, when the controller 140 collectively displays the available toilet information, the controller 140 may classify the information according to the location information of the toilet corresponding to the received signal. For example, when an ON signal is received from a sensor located in the toilet A, the controller 140 may combine the position information (A toilet) of the signal and the available toilet information (reduced number of available toilet seats 1) together. In addition, the controller 140 displays the available toilet information for a plurality of toilets, and controls the display of the available toilet information by the location of the toilet.

The control unit 140 may also transmit the changed available toilet information to the display unit 120.

In accordance with various embodiments of the present invention, the available restroom information may be operated in a variety of ways on an application based on information collected using a user mobile device. In order to support this, the controller 140 may include a weight setting unit 141, a sequence changing unit 143, and a statistical analysis unit 145.

First, when a user enters a toilet with a mobile device, the mobile device senses a sensor provided in the toilet and can collect time information of the user of the mobile device staying in the toilet. The time information of the user staying in the toilet may include various methods such as a method in which the user mobile device measures the time information by detecting the distance to the locked sensor and a method in which the user mobile device receives the time information directly from the locking sensor capable of transmitting the wireless signal Can be used. Once the user mobile device has been informed of the time of staying in the toilet, the information may be transmitted to the server 100 again . At this time, the statistical analysis unit 145 may calculate the average toilet usage time data for each device (per user) based on the information received from the user mobile device. The average toilet usage time data may be set to a value that is significant only when the cumulative number of times using the toilet to which the system of the present invention is applied exceeds a predetermined value. The calculated average toilet usage time data per user may be further provided to the available toilet information when the user is using the toilet, and may provide information on when the toilet is available to those waiting for the vacant place. For example, suppose A on the first floor is accessing an application and looking for an empty toilet. The toilet on the first floor is full, and if there is only one seat on the toilet on the second floor, A is on the first floor, so you can line up to use the toilet on the first floor. If, however, the average toilet usage time data of the users using the first floor toilet in the application are all displayed as 15 minutes, A can judge that going to the second floor toilet is faster. In this manner, the statistical analysis unit 145 may calculate toilet usage time data for each user and provide the data to be displayed on the application.

Also, when the user wants to use the toilet after confirming in the application, the user can check the average toilet usage time data of the toilet waiters and predict the time when the toilet will be vacated based on the data. Alternatively, the application may analyze the number of waiters and the average toilet use time data and inform the user of the time when vacant space will be generated.

According to various embodiments of the present invention, a user may wait for an application in a specific toilet (wait for registration) while an application recognizes a toilet position and then moves. And the people using the application can see the waiting number and judge whether the toilet is rushing. Alternatively, when the user who has put the air conditioner turns on, the application may transmit a push notification to the user's mobile device to go to the toilet. It is assumed that all the waiters are the people whose mean restroom use time data is collected by the statistical analysis unit 145.

The weight setting unit 141 and the order changing unit 143 of the control unit 140 can designate an efficient toilet usage order for waiting people who hang on the toilet in the toilet and wait for a push notification when the toilet is seated. If the average toilet use time data from the first to fourth waiters is a very long time (for example, 15 minutes), and the fifth wait time is a very short time (for example, one minute). At this time, it can be judged that it is more efficient to send the fifth waiter to the toilet first. In order to implement this operation, the weight setting unit 141 may set a formula based on the average toilet usage time data of the waiters and the waiting order data and assign a waiting priority score to the weight setting unit 141. [ The order changing unit 143 may change the order of the waiters based on the score summed with the formula set by the weight setting unit 141. [ For example, the higher the point in time of starting the waiting on the application, the higher the score, the shorter the average restroom usage time is, the higher the score, and the higher the score, the greater the priority in waiting priority. According to the result calculated in this way, if the order change unit 143 changes the fifth waiter to the first order, the fifth waiter can receive the push notification before the first waiter and head to the toilet.

The weight setting unit 141 also counts the number of times that the order change unit 143 has performed the order change and performs the order change by a predetermined number of times so that the waiter who has seen the damage is given a high score, .

According to various embodiments of the present invention, the server 100 may further include a wireless communication unit and wirelessly transmit information to the display unit 120. [ The wireless communication method used at this time may be Zigbee communication, Wi-Fi, or the like. The server 100 may further include a communication module and related equipment that can upgrade the information on the web so that the available toilet information can be confirmed by the user's mobile device.

The display unit 120 according to various embodiments of the present invention may be formed of a liquid crystal display (LCD) organic light emitting diode (OLED), an active matrix light emitting diode (AMOLED) And can visually provide information received from the server 100 to the user. According to various embodiments of the present invention, the display unit 120 may include not only a high-definition display device, but also a relatively simple-structured electronic signboard that implements a seven-segment display.

The display unit 120 may be fabricated in the form of a display panel indicating the position of the toilet. However, the present invention is not limited to this, and the display unit 120 may include a personal device screen such as a smart phone, a tablet PC, or a wearable device of users.

The display unit 120 according to an embodiment of the present invention may use various methods in a method of displaying available toilet information. The display unit 120 may display available toilet information in numbers based on the Seven Segment method or the like. The display unit 120 may display the available toilet information in a non-numeric manner. For example, when three of the five toilets of the toilet are in use, the display unit 120 can display the available toilet information in such a manner that only three of the five illuminants emit light. In addition, a variety of display methods are possible.

FIG. 3 is a flowchart illustrating an operation of displaying the available toilet information according to the embodiment of the present invention.

3 is described as an operation center performed by the control unit 140 of the server 100. FIG. The control unit 140 may determine in step 305 whether an ON signal is received from the toilet lock sensor. In this case, the toilet lock sensor may mean a reed switch mounted on a door locking device installed in each toilet compartment. That is, when the user enters the toilet partition and locks the door, the reed switch can transmit an ON signal indicating that the toilet compartment is in use to the server 100 side. Thus, the controller 140 can receive signals from specific individual sensors.

If the controller 140 determines that the received signal is an ON signal, the controller 140 may perform a step of checking the location information of the signal in step 310. [ The location information may be, for example, information on the number of floors of a toilet, toilet name (e.g., toilet A, toilet on the west exit, etc.) as the toilet position information in which the sensor that transmits the signal is located. If it is not necessary to display a plurality of toilet information at a time, only the empty space of one toilet is displayed, the process of step 310 may be omitted.

The control unit 140 may process the information so that the number of available toilet seats in the toilet is reduced by one in step 315. [ The control unit 140 may transmit a signal to the display unit 120 to display the changed information (available toilet information) in step 320 based on the processed result.

If it is determined in step 305 that the ON signal is not received from the toilet lock sensor, the controller 140 may determine in step 325 whether the OFF signal is received from the toilet lock sensor. The OFF signal is a signal indicating that the lock of the toilet compartment is released and the corresponding seat becomes usable.

If the control unit 140 determines that the OFF signal has been received, the controller 140 may check the location information of the corresponding signal in step 330. Like step 310, step 330 may be omitted depending on the type of the display unit 120.

The controller 140 may increase the number of toilet seats in the toilet by one in step 335. [ In step 335, the controller 140 may perform a step 320 of transmitting a signal to the display unit 120 to display the changed information. For convenience of explanation, the available toilet information processed and displayed by the control unit 140 is shown as the number of available toilet seats. However, the available toilet information displayed by the control unit 140 may be in the form of the number of the toilet bowl and the number of the toilet bowl in use.

If the controller 140 determines in step 325 that the OFF signal is not received from the toilet lock sensor, the controller 140 may maintain the current state without performing any information processing and display command.

FIG. 4 is a view showing an available toilet information panel according to the first embodiment of the present invention.

According to various embodiments of the present invention, the display unit 120 may be a display board informing the position of the toilet. In FIG. 4, numeral 420 indicates a state in which available toilet information is displayed on a guide plate indicating the position of the toilet. 410 is a conventional toilet location guide and is shown for comparison with 420. As shown at 410, there is no separate numerical data in the existing toilet location guide plate. However, in the display panel 420 according to the first embodiment of the present invention, available toilet information 421 and 422 are shown. Available toilet information 421 is shown next to the symbol, which signifies the women's restroom. The available toilet information 421 is displayed in the form of the number of the entire toilet and the number of the toilet in use. Available toilet information 421 means that the number of toilet seats in use is 5 out of the total 5 toilet seats in a ladies' room. Likewise, the available toilet information 422 located next to the men's toilet symbol is marked 3/5, which means that there are three toilet seats in use among the five toilet seats.

Available toilet information such as 421 and 422 can be expressed in the form of (number of toilet seats in use) / (total number of toilet seats). However, according to various embodiments of the present invention, the available toilet information can be expressed in the form of (number of toilet seats in use), (number of toilet seats available) / (total number of toilet seats) or (number of toilet seats available).

In addition, the available toilet information may be displayed along with the toilet symbol 423, 424, etc. to more clearly indicate what the available toilet information means.

FIG. 5 is a view showing an information display panel for a toilet according to a second embodiment of the present invention. FIG.

FIG. 5 shows a form of a display panel that can inform a user of a restroom when there are many restrooms in a building or a specific place. As shown in FIG. 5, the display panel in which the statuses of the restrooms at various places are displayed at one time can be installed at various positions including the toilet entrance. By collecting and displaying a plurality of pieces of toilet information in this way, the user can select a toilet to be used by judging the distance between the present location and the toilet, the degree of rush of the toilet, and the like in a comprehensive manner.

Referring to FIG. 5, the largest size area 510 and the relatively small size areas 520 and 530 are shown. As described above, the available toilet information display panel can display the toilet information closest to the place where the display panel is located in the area 510 of a relatively large size. In addition, toilet area information 511, 521, and 531 may be displayed in each of the areas 510, 520, and 530. In FIG. 5, the toilet position information 511, 521, and 531 are represented by A, B, and C, respectively, but this information may be described in a direction that further describes the position of the toilet. For example, the toilet location information 511, 521, and 531 may be written as a first floor toilet, a second floor toilet, and a third floor toilet, respectively. Alternatively, the toilet location information 511, 521, and 531 may be described as an east exit toilet, a west exit toilet, a south exit toilet, and the like.

In the available toilet information display panel shown in FIG. 5, the number of the entire toilet and the number of the toilet in use are displayed as the available toilet information 512. As described above, the display format of the available restroom information 512 may be changed in the form of the number of toilet seats available. If you look at the available toilet information 512, you can see the message '4 in use all 4'. If the user views the available toilet information 512 at the toilet entrance A, it is possible to recognize that four out of four toilet seats in the toilet A are in use. Then, the user can check the number of the toilet bowl in the B toilet and the C toilet and the number of the toilet bowl in use by referring to the information described in the other areas 520 and 530 of the display panel. As a result, the user can choose whether to wait in the closest A toilets or immediately to go to the B toilets or C toilets that are not crowded.

And available toilet information 512 may be displayed with image information such as toilet bowl symbol 513. Thus, the display panel can help the user to guess that the available toilet information 512 is information on the number of toilet seats in the toilet.

The display panel shown in FIG. 5 is installed at the entrance of the toilet A so that the user can grasp the position of the toilet without entering the toilet. Further, a display panel, such as the display panel shown in Fig. 5, which integrally displays information on various restrooms, may be installed near the position for guiding the toilet position. The display panel shown in FIG. 5 may be used as a toilet location guide by adding signs indicating the locations of the toilets, together with information of various toilets.

Assuming that the integrated screen as shown in FIG. 5 is used as a display panel for guiding the position of the toilet, the distance of the closest closest room to the display panel may be additionally described according to various embodiments of the present invention. When the display panel for guiding the position of the toilet is represented by an integrated screen as shown in FIG. 5, the user can check the toilet which is not the most crowded at the time of finding the toilet, and then move to the toilet.

FIG. 6 is a view showing a design diagram of a toilet information display panel according to a second embodiment of the present invention.

Referring to FIG. 6, it can be seen that the display panel existing in the A zone displays the largest available toilet information of the A toilet located at the closest position. Likewise, the available toilet information of the toilet B closest to the area B is displayed on the largest area of the display panel, and the display panel C displays the information of the toilet C on the largest area. As described above, the information display method of the display unit according to the embodiment of the present invention can be changed according to the installation position of the display panel. The control unit 140 can control each display unit so that the information on the toilet closest to the display unit is displayed in the largest area.

FIG. 7 is a diagram illustrating a UI of an application for displaying available toilet information according to an embodiment of the present invention.

According to various embodiments of the present invention, the display unit 120 may be a screen of the personal portable terminal of the user. At this time, the server 100 may further include a module for performing a wireless communication function to upload available toilet information to an application. The user can access the application providing the available toilet information to determine whether the toilet is usable. The control unit 140 may process the available toilet information and the guide map of the building or an image such as a map together in the application. At this time, the controller 140 can access the web and upload information to provide information to the application using the wireless communication module. When the user accesses the application by using the wireless communication function of the portable terminal, the user can simultaneously grasp the position of the toilet to be checked and the number of toilet seats available.

7, reference numerals 710, 715 and 720 denote restrooms. In the screen of the portable terminal shown in FIG. 7, three toilets in the building are displayed, and the user can select one of the toilet markers 710, 715, and 720 to check the available toilet information. Alternatively, the available toilet information may be displayed next to the toilet markings 710, 715, 720.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And the like. Accordingly, the scope of various embodiments of the present invention should be construed as being included in the scope of various embodiments of the present invention without departing from the scope of the present invention, all changes or modifications derived from the technical idea of various embodiments of the present invention .

100: Server
110:
120:
130:
140:
141: Weight setting unit
143:
145: Statistical Analysis Department

Claims (6)

A sensor unit for detecting whether the toilet is in use and for transmitting a sensed signal to a server; And
The number of available toilet seats in the toilet is reduced by 1 when the signal is received from the sensor and the received signal is ON indicating that the toilet is in use, And a server for transmitting the signal of the changed information to the display unit so as to change the available toilet information and display the changed toilet information.
Detecting whether the sensor unit is using the toilet and transmitting the sensed signal to the server;
When the server receives a signal from the sensor and the received signal is ON indicating that the toilet is in use, the number of available toilet seats in the toilet is decreased by 1. When the number of available toilet seats in the toilet is 1 Changing the available toilet information to increase;
Transmitting a signal of the changed available toilet information to a display unit;
And displaying the information on the display unit in accordance with a signal received from the server.
When the signal indicating whether the toilet is in use is received from the sensor unit is ON when the signal indicates that the toilet is in use, the number of available toilet seats in the toilet is decreased by 1. When the signal is OFF, A control unit for changing the available toilet information so that the number of the toilet is increased by one and transmitting a signal for the changed information to the display unit;
A program for changing available toilet information according to the position information of the toilet corresponding to the received signal, the total number of the toilet in the toilet, and whether the received signal is on / off; And a display unit for displaying the available toilet information.
The method of claim 3, wherein
The control unit
A statistical analysis unit that receives data on toilet usage time collected by the mobile device and calculates average toilet use time data based on the received data when the received data is accumulated more than a predetermined number of times;
A weight setting unit for assigning a score related to the waiting priority based on the average toilet use time data and the waiting order information; And
And an order changing unit for resetting the order of waiting according to the priority based on the score.
A sensor unit for detecting whether the toilet is in use and for transmitting a sensed signal to a server;
The number of available toilet seats in the toilet is reduced by 1 when the signal is received from the sensor and the received signal is ON indicating that the toilet is in use, A server for changing the available toilet information and transmitting a signal of the changed information to the display unit so as to display the information; And
And a display unit for displaying information according to a signal received from the server,
The server comprises:
Further comprising: a communication module capable of confirming toilet position information corresponding to the received signal, processing available toilet information for each toilet, and transmitting and receiving a wireless signal with at least one of the sensor unit and the display unit, Wherein the available toilet information is uploaded to the web using the communication module so that available toilet information is provided together with the application.
6. The method of claim 5,
Wherein the information provided to the application via the communication module includes:
And a waiting time occurrence time estimated based on the average restroom use time data of the user who uses the restroom, and when the user sets the waiting time in the application, the push notification sent to the user having the high waiting time priority ≪ / RTI &
The available toilet information includes:
The number of available toilet seats, the number of available toilet seats, the number of used toilet seats, the number of available toilet seats among the total number of toilet seats, and the number of used toilet seats among the total number of toilet seats.

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