Tenant-specific water usage amount calculation system and tenant-specific water usage amount calculation method

Abstract

To provide a tenant-specific water usage amount calculation system and a tenant-specific water usage amount calculation method that can more accurately calculate a tenant-specific water usage amount.SOLUTION: A tenant-specific water usage amount calculation system 100 includes a data storage unit 103, a calculation unit 104, and an output unit 105. The data storage unit 103 acquires and stores a water usage amount report 31 and people flow information 110 indicating the number of people counted by an elevator 11 or a sensor 12 installed in a building. The calculation unit 104 calculates a tenant-specific water usage amount based on the water usage amount report 31 and the people flow information 110 stored in the data storage unit 103. The output unit 105 outputs the tenant-specific water usage amount calculated by the calculation unit 104.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a tenant-by-tenant water usage calculation system and a tenant-by-tenant water usage calculation method. [Background technology]

[0002] In the past, in buildings (office buildings) occupied by multiple tenants, water was used in common areas, particularly toilets and kitchens, and it was difficult to identify which employees of which tenants were using these common areas. In addition, the amount of water used in buildings (office buildings) occupied by multiple tenants was calculated for each tenant by dividing the water use for the entire building for a specified period created by the water company by the number of units in the building. Therefore, in the past, it was not possible to accurately grasp the amount of water used by each tenant.

[0003] Furthermore, a technology for calculating the amount of water, electricity, etc. used by each tenant is described, for example, in Patent Document 1. Patent Document 1 describes a technology that includes an energy usage information acquisition means and an allocation means for apportioning the amount to each tenant. The energy usage information acquisition means acquires energy usage information on the average energy usage of each tenant's dedicated equipment for each fixed period of time and the amount of energy usage of the shared equipment of the tenant building during the billing period. The allocation means allocates the amount of energy usage of the shared equipment of the tenant building during the billing period to each tenant based on the ratio of the actual usage of each tenant's dedicated equipment obtained from the energy usage information. The technology described in Patent Document 1 calculates the amount of energy usage by tenant based on the maximum number of people in the room. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-81475 A Summary of the Invention [Problem to be solved by the invention]

[0005] Furthermore, the technology described in Patent Document 1 calculates the amount of energy used by each tenant based on the maximum number of people present in the room. However, with the implementation of teleworking, the number of people who come to work at each tenant varies greatly from day to day. Therefore, there is a large discrepancy between the maximum number of people present in the room and the number of people who actually come to work. As a result, the technology described in Patent Document 1 is unable to accurately calculate the amount of water used by each tenant.

[0006] In consideration of the above problems, an object of the present invention is to provide a tenant-specific water usage calculation system and tenant-specific water usage calculation method that can more accurately calculate the amount of water usage for each tenant. [Means for solving the problem]

[0007] In order to solve the above problems and achieve the object, a tenant-specific water usage calculation system is a tenant-specific water usage calculation system that calculates the water usage of each tenant in a building occupied by multiple tenants. The tenant-specific water usage calculation system includes a data storage unit, a calculation unit, and an output unit. The data storage unit acquires and stores a water usage report, which is the amount of water used in a building during a specified period, and people flow information, which is the number of people counted by elevators or sensors installed in the building. The calculation unit calculates water usage by tenant based on the water usage report and people flow information stored in the data storage unit. The output unit outputs the water usage by tenant calculated by the calculation unit.

[0008] The method for calculating the amount of water usage by tenant is a method for calculating the amount of water usage by tenant in a building occupied by multiple tenants, and includes the following processes (1) to (3). (1) A process of obtaining a water usage report, which is the amount of water used in a building during a specified period of time, and people flow information, which is the number of people counted by elevators or sensors installed in the building, and storing the information in a data storage unit. (2) A process in which the calculation unit calculates the water usage amount for each tenant based on the water usage report and the pedestrian flow information stored in the data storage unit. (3) A process in which the water usage amount for each tenant calculated by the calculation unit is output by the output unit. Effect of the Invention

[0009] According to the tenant-specific water usage calculation system and tenant-specific water usage calculation method configured as described above, it is possible to more accurately calculate the water usage amount for each tenant. [Brief description of the drawings]

[0010] [Figure 1] 1 is a schematic configuration diagram showing a water usage calculation system according to an embodiment. [Diagram 2] 1 is a flowchart showing a method for calculating the amount of water usage for each tenant by the water usage calculation system according to the embodiment. [Diagram 3] 10 is a flowchart for determining a calculation pattern for a method of calculating water usage for each tenant by the water usage calculation system according to the embodiment. [Figure 4] FIG. 2 is a diagram showing a calculation pattern of the water usage calculation system according to the embodiment. [Diagram 5] FIG. 4 is a diagram showing an example of a tenant-specific water usage report output by the water usage calculation system according to the embodiment. [Figure 6] FIG. 11 is a diagram showing another example of the tenant-specific water usage report output by the water usage calculation system according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an embodiment of the tenant-specific water usage calculation system and calculation method will be described with reference to Fig. 1 to Fig. 6. In addition, the same reference numerals are used to designate common members in each drawing.

[0012] 1. Example of embodiment 1-1. Example of the configuration of a system for calculating water usage by tenant First, the configuration of a tenant-by-tenant water usage calculation system according to an embodiment (hereinafter, referred to as "this example") will be described with reference to FIG. FIG. 1 is a schematic diagram showing the configuration of a tenant-by-tenant water usage calculation system according to this embodiment.

[0013] The tenant-specific water usage calculation system 100 (hereinafter simply referred to as the building system) shown in Fig. 1 is a system that calculates the amount of water usage by each tenant residing in an office building 10. Multiple businesses (tenants) reside in the office building 10. The office building 10 is equipped with an elevator 11 through which people and luggage move, and multiple sensors 12.

[0014] For example, a ToF (Time of Flight) sensor is applied as the sensor 12. The sensor 12 is installed on a floor where the elevator 11 stops, on the stairs of the office building 10, at the entrances and exits of each tenant, etc. The sensor 12 counts the number of people passing through the floor where the elevator 11 stops, on the stairs of the office building 10, at the entrances and exits of each tenant, etc.

[0015] The sensor 12 is not limited to a ToF sensor. Various sensors such as a millimeter wave sensor and a camera can be used as the sensor 12, and it is sufficient if the sensor can count the number of people passing through the floor where the elevator 11 stops, the stairs of the office building 10, the entrances and exits of each tenant, etc.

[0016] The elevator 11 counts the number of people getting on and off at each floor using a weight sensor and a TOF sensor installed in the elevator car. The number of people counted by the elevator 11 and the multiple sensors 12 (hereinafter referred to as people flow information) is output to the building system 100.

[0017] The building system 100 includes a data storage unit 103, a tenant company water usage calculation unit (hereinafter referred to as the calculation unit) 104, and a water usage output unit 105. The data storage unit 103 stores people flow information 110 and a water usage report 31. The people flow information 110 is acquired from the elevators 11 and multiple sensors 12 installed in the office building 10 described above.

[0018] Furthermore, the water company 30 creates a water usage report 31 which is the amount of water used in the entire office building 10 within a predetermined period (for example, one month). The building system 100 acquires the water usage report 31 from the water company 30 and stores it in the data storage unit 103. The data storage unit 103 also stores in advance occupancy information 107 which indicates the occupancy status of multiple tenants residing in the office building 10. Examples of the occupancy information 107 include information on the number and attributes of tenants, tenant uses, and the like. Specific examples of the occupancy status of tenants include one tenant spanning multiple floors, multiple tenants residing on one floor, and one tenant residing on one floor. The data storage unit 103 is connected to the calculation unit 104.

[0019] The calculation unit 104 includes, for example, a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), and a non-volatile storage, each of which is connected to a bus.

[0020] The CPU reads out the program code of the software that realizes each function according to the present embodiment from the ROM, expands it in the RAM, and executes it. Note that the control processing unit may include a processing device such as an MPU (Micro-Processing Unit) instead of the CPU. Variables, parameters, etc. that are generated during the calculation process are temporarily written to the RAM.

[0021] Examples of non-volatile storage that can be used include a hard disk drive (HDD), a solid state drive (SSD), a flexible disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, and a non-volatile memory card. In addition to an operating system (OS) and various parameters, programs for operating the control processing unit are recorded in the non-volatile storage. The programs may be stored in a ROM.

[0022] The program is stored in the form of a computer-readable program code, and the CPU sequentially executes operations according to the program code. In other words, a ROM or non-volatile storage is used as an example of a computer-readable non-transitory recording medium that stores a program to be executed by a computer.

[0023] The calculation unit 104 has a plurality of calculation patterns. The calculation unit 104 selects a predetermined calculation pattern from the plurality of calculation patterns according to the occupancy information 107 of each tenant stored in the data storage unit 103. Then, the calculation unit 104 calculates the number of people in each tenant for a predetermined period (for example, one month) from the people flow information 110 stored in the data storage unit 103 based on the selected calculation pattern. Furthermore, the calculation unit 104 calculates the water usage for each tenant from the number of people in each tenant and the water usage report 31. The calculation unit 104 is connected to the water usage output unit 105.

[0024] The water usage output unit 105 acquires the water usage per tenant calculated by the calculation unit 104. Then, the water usage output unit 105 outputs the acquired water usage per tenant. For example, a display unit is applied as the water usage output unit 105. Then, the water usage output unit 105 displays the acquired water usage per tenant. In addition, the water usage output unit 105 is not limited to a display unit, and may be a notification unit that notifies each tenant of the water usage per tenant.

[0025] 2. Calculation method for water usage by tenant Next, a method for calculating the water usage amount per tenant by the tenant water usage calculation system 100 having the above-described configuration will be described with reference to Figs. FIG. 2 is a flowchart showing a method for calculating the water usage amount for each tenant.

[0026] 2, first, the data storage unit 103 of the building system 100 acquires a water usage report 31 for one office building 10 for a predetermined period created by the water company 30. Then, the data storage unit 103 stores the acquired water usage report 31 (step S1).

[0027] The data storage unit 103 acquires people flow information from the sensors 12 and the elevators 11. Then, the data storage unit 103 stores the acquired people flow information (step S2). In addition, the water usage report 31 and the people flow information stored in the data storage unit 103 in steps S1 and S2 are output to the calculation unit 104.

[0028] Next, the calculation unit 104 calculates the average number of occupants for each tenant in a predetermined period (e.g., one month) based on the acquired information and in accordance with the calculation pattern. The average number of occupants is the number of occupants per day. The calculation unit 104 then performs an apportionment process on the water usage report 31 based on the calculated average number of occupants for each tenant, and calculates the water usage for each tenant (step S3). The calculation pattern used in step S3 will be described later.

[0029] Next, the calculation unit 104 outputs the water usage per tenant calculated in the process of step S3 to the water usage output unit 105. Then, the water usage output unit 105 displays the water usage per tenant calculated by the calculation unit 104 (step S4). This completes the calculation and output process of the water usage per tenant by the tenant water usage calculation system 100.

[0030] According to the building system 100 of this example, the number of people (the number of people present) for each tenant can be grasped more accurately by using people flow information for each tenant acquired from the elevators 11 and sensors 12 installed in the office building 10. As a result, the water usage for each tenant can be calculated more accurately by performing an apportionment process using this people flow information. The water usage report for each tenant displayed by the water usage output unit 105 will be described later.

[0031] Next, a method for determining a calculation pattern used by the calculation unit 104 will be described with reference to FIGS. Fig. 3 is a flowchart for determining a calculation pattern, and Fig. 4 is a diagram showing the calculation pattern.

[0032] As described above, the data storage unit 103 stores the occupancy information 107 of each tenant in advance. As shown in Fig. 3, the calculation unit 104 determines whether or not there is a tenant that spans multiple floors (floors) among the multiple tenants based on the occupancy information 107 acquired from the data storage unit 103 (step S11). In the process of step S11, when it is determined that there is a tenant that spans multiple floors (Yes judgment in step S11), the calculation unit 104 determines the calculation pattern for the number of tenants that span multiple floors to be the first pattern A.

[0033] On the other hand, if it is determined in the process of step S11 that the tenant does not span multiple floors (No in step S11), the calculation unit 104 determines whether or not there are multiple tenants on one floor (step S12). If it is determined in the process of step S12 that there are multiple tenants on one floor (Yes in step S12), the calculation unit 104 determines the calculation pattern for the number of tenants to be the second pattern B. Also, if it is determined in the process of step S12 that there are not multiple tenants on one floor (No in step S12), the calculation unit 104 determines the calculation pattern for the number of tenants to be the third pattern C.

[0034] In the first pattern A, one tenant spans multiple floors, so people using that tenant may move around using stairs in addition to elevator 11. For this reason, sensor 12 is installed on a staircase connecting multiple floors that one tenant spans, and sensor 12 installed on this staircase measures the number of people using the stairs.

[0035] 4, the calculation unit 104 sets information from the elevator 11 (EV information) or information from the sensor 12 installed on the floor where the elevator 11 stops as a reference value (1). Furthermore, the calculation unit 104 acquires staircase user information (2) measured by the sensor 12. Then, the calculation unit 104 calculates the number of tenants determined to be in the first pattern A by increasing or decreasing the staircase user information (2) relative to the reference value (1) ((1)±(2)).

[0036] In the second pattern B, since multiple tenants occupy one floor, the number of people for each tenant cannot be accurately determined by measuring the number of people on a floor-by-floor basis. Therefore, a sensor 12 is installed at the entrance / exit of each tenant. Then, the calculation unit 104 measures (calculates) the information (1) from the sensor 12 installed at the entrance / exit as the number of tenants determined to be in the second pattern B.

[0037] In the third pattern C, it is sufficient to measure the number of people on a floor-by-floor basis. Therefore, the calculation unit 104 calculates the information from the elevator 11 (EV information) or the information (1) from the sensor 12 installed on the floor where the elevator 11 stops as the number of tenants determined in the third pattern C. Therefore, in the third pattern C, it is not necessary to install the sensor 12 at the entrance and exit of each tenant, so that the number of sensors 12 installed in the office building 10 can be reduced.

[0038] Then, the calculation unit 104 calculates the average number of people occupying a room for a predetermined period (e.g., one month) from the number of people occupying a room per day for each tenant calculated using the above-mentioned first pattern A, second pattern B, and third pattern C. In this way, by changing the method of measuring (calculating) the number of people according to the occupancy information 107 (occupancy status) of each tenant residing in the office building 10, it is possible to accurately calculate the number of people (number of people occupying a room) for each tenant. As a result, it is possible to more accurately calculate the water usage amount for each tenant.

[0039] In the above embodiment, the calculation unit 104 processes the water usage report 31 proportionally based on the average number of occupants of each tenant to calculate the water usage for each tenant, but the present invention is not limited to this. For example, the calculation unit 104 may calculate (measure) the total number of occupants for each tenant in a specified period, and calculate the water usage for each tenant based on the total number of occupants. As a method for calculating (measuring) the total number of occupants, a specified calculation pattern is determined from the multiple calculation patterns described above, and the calculation is performed based on the determined calculation pattern.

[0040] 3. Water usage report by tenant Next, the tenant-specific water usage report outputted from the water usage output unit 105 will be described with reference to FIGS. 5 and 6 are diagrams showing water usage reports by tenant. In the example shown in FIG. 5 and FIG. 6, four tenants, Tenant A, Tenant B, Tenant C, and Tenant D, are present in an office building 10. The report shown in FIG. 5 is a monthly report in which the horizontal axis indicates the month and the vertical axis indicates the amount of water usage. The report shown in FIG. 6 is an annual report in which the horizontal axis indicates the year and the vertical axis indicates the amount of water usage. The reports shown in FIG. 5 and FIG. 6 are stacked bar graphs in which the water usage of the four tenants A, B, C, and D is stacked in one bar.

[0041] As shown in Figures 5 and 6, the tenant-specific water usage calculation system 100 of this example can visualize and display the water usage for each tenant. By visualizing and displaying the water usage for each tenant in this way, it is possible to easily compare the water usage for each tenant. Furthermore, by notifying each tenant of the reports shown in Figures 5 and 6, it is possible to encourage behavioral change and reduce water usage.

[0042] The water usage report by tenant output by the water usage output unit 105 is not limited to the examples shown in Figures 5 and 6, and may display, for example, the proportion of water usage by tenant for a predetermined period using a pie chart. Also, it is not limited to the graphs shown in Figures 5 and 6, and the water usage output unit 105 may output only the numerical values ​​of water usage by tenant. Furthermore, the water usage output unit 105 may output not only the water usage by tenant, but also the occupancy area of ​​each tenant and the number of occupants of each tenant based on the occupancy information.

[0043] The present invention is not limited to the embodiment described above and shown in the drawings, and various modifications can be made without departing from the spirit of the invention as defined in the claims.

[0044] In addition, the above-mentioned components, functions, processing units, etc. may be realized in part or in whole in hardware, for example, by designing an integrated circuit. In addition, the above-mentioned components, functions, etc. may be realized in software by a processor interpreting and executing a program that realizes each function. Information such as the program, table, file, etc. that realizes each function can be stored in a recording device such as a memory, a hard disk, or an SSD (Solid State Drive), or in a recording medium such as an IC card, an SD card, or a DVD.

[0045] Furthermore, the above-described system is not limited to use for apportioning water usage in common areas of an office building, but may also be used for apportioning electricity bills for common areas or gas bills for common areas, for example. [Explanation of symbols]

[0046] 10... office building (building), 11... elevator, 12... sensor, 30... water company, 31... water usage report, 100... water usage calculation system by tenant (building system), 103... data storage section, 104... water usage calculation section by tenant company (calculation section), 105... water usage output section (output section), 107... occupancy information, 110... pedestrian flow information

Claims

1. In a water usage calculation system for each tenant in a building occupied by multiple tenants, a data storage unit that acquires and stores a water usage report that indicates the amount of water used in the building during a predetermined period and people flow information that indicates the number of people counted by elevators or sensors installed in the building; a calculation unit that calculates the water usage amount for each tenant based on the water usage report and the people flow information stored in the data storage unit; an output unit that outputs the water usage amount for each tenant calculated by the calculation unit; A water usage calculation system for each tenant.

2. The calculation unit is It has multiple calculation patterns, determining a calculation pattern from a plurality of calculation patterns based on the occupancy information of each tenant previously stored in the data storage unit; Calculating the number of people in the tenant from the people flow information based on the determined calculation pattern; Calculate the water usage for each tenant based on the calculated number of occupants of the tenant and the water usage report. The tenant-by-tenant water usage calculation system according to claim 1 .

3. The calculation unit determines the calculation pattern based on the occupancy status of the plurality of tenants. The tenant-by-tenant water usage calculation system according to claim 2 .

4. When the tenant occupies multiple floors, the calculation unit sets information measured by a sensor installed in the elevator or a floor on which the elevator stops as a reference value, The number of people present in the room of the tenant is calculated by increasing or decreasing the information measured by a sensor installed in a staircase connecting the multiple floors where the tenants reside, relative to the reference value. The tenant-by-tenant water usage calculation system according to claim 3 .

5. When a plurality of the tenants reside on one floor, the calculation unit calculates the number of the tenants present based on information measured by a sensor installed at the entrance of the tenant. The tenant-by-tenant water usage calculation system according to claim 3 .

6. When there is only one tenant on one floor, the calculation unit calculates the number of tenants present based on information measured by the elevator or a sensor installed on the floor where the elevator stops. The tenant-by-tenant water usage calculation system according to claim 3 .

7. The calculation unit calculates an average number of people per day in a predetermined period as the number of people in the tenant, and calculates the water usage amount for each tenant based on the average number of people and the water usage report. The tenant-by-tenant water usage calculation system according to claim 1 .

8. The calculation unit calculates a total number of people in the tenant during a predetermined period as the number of people in the tenant, and calculates the water usage amount for each tenant based on the total number of people and the water usage report. The tenant-by-tenant water usage calculation system according to claim 1 .

9. In a method for calculating water usage by tenant in a building occupied by multiple tenants, A process of acquiring a water usage report, which is the amount of water used in the building during a predetermined period, and people flow information, which is the number of people counted by elevators or sensors installed in the building, and storing the information in a data storage unit; A process of calculating, by a calculation unit, the water usage amount for each tenant based on the water usage report and the people flow information stored in the data storage unit; a process of outputting the water usage amount for each tenant calculated by the calculation unit by an output unit; Calculation method for water usage by tenant, including:

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