JP-2026075927-A - Facility management device and facility management method

Abstract

【assignment】 To more accurately estimate the number of people in each area of the facility. [Solution] The facility management device includes a first acquisition unit that acquires power data of outlet-using devices, which are electronic devices that use outlets in the facility area; a second acquisition unit that acquires equipment operation status data indicating the operating status of equipment in the area; an unoccupied state time estimation unit that estimates the time the target area is unoccupied based on the equipment operation status data; an occupancy-dependent component output unit that outputs a power component of the power data of outlet-using devices that depends on the number of people in the room based on the time the area is unoccupied; and an occupancy index output unit that calculates an occupancy index related to the number of people in the target area from the power component that depends on the number of people in the room. [Selection Diagram] Figure 2

Inventors

• 吉川 敏文
• 大塩 謙介
• 河合 章悟
• 大野 航
• 松井 遼平
• 大塚 憲治

Assignees

• 株式会社日立製作所

Dates

Publication Date

20260511

Application Date

20241023

Claims (16)

1. A first acquisition unit acquires power data of electronic devices that use electrical outlets within the facility area, and A second acquisition unit acquires equipment operating status data indicating the operating status of the equipment in the aforementioned area, An unmanned state time estimation unit estimates the amount of time the target area is unmanned based on the aforementioned equipment operating status data, An occupancy-dependent component output unit outputs a power component from the power data of the devices using the outlet that depends on the number of people in the room, based on the time the room is unoccupied. An occupancy index output unit calculates an occupancy index for the number of people in the target area from the power component which depends on the number of people in the room, A facility management device characterized by being equipped with the following features.
2. The aforementioned room occupancy index output unit is: The facility management device according to claim 1, characterized in that it outputs a command to control at least one of the facilities and equipment in the area based on the aforementioned occupancy index.
3. The aforementioned room occupancy index output unit is: The facility management device according to claim 1, characterized in that it outputs an order for managing the time required to perform at least one of the cleaning and security of the area based on the aforementioned occupancy index.
4. The aforementioned room occupancy index output unit is: The facility management device according to claim 2 or 3, characterized in that it outputs a command to control at least one of the facilities and equipment in the area, or a command to manage the time for performing at least one of cleaning and security in the area, based on the time the area is unmanned.
5. The aforementioned unattended state time estimation unit is: The facility management device according to claim 1, characterized in that it estimates the time of the unmanned state by grouping the power data or the operating status data of the equipment.
6. The aforementioned unattended state time estimation unit is: The facility management device according to claim 4, characterized in that it groups at least one time-series data of access control information data from an access control device, operating status data of water supply equipment, operating status data of toilet equipment, illuminance measurement data from an illuminance sensor, noise measurement data from a noise sensor, and CO2 concentration measurement data from a CO2 concentration sensor in the floor or area, and estimates the time of the unoccupied state based on the time-series data belonging to the group with the lowest value.
7. The aforementioned unattended state time estimation unit is: The facility management device according to claim 1, characterized in that it estimates the time period from the time the last person leaves to the time the first person enters the next day, based on the entry and exit data for the area collected from the entry and exit management device, as the time of the unoccupied state.
8. The aforementioned unattended state time estimation unit is: The facility management device according to claim 1, characterized in that, based on calendar information corresponding to the date of the power data of the outlet-using equipment, if the calendar information is a holiday, the facility is identified as being unoccupied during the holiday hours.
9. The aforementioned unattended state time estimation unit is: The facility management device according to claim 1, characterized in that when a predetermined time period based on the time information of the power data of the outlet-using equipment is a specific time period, the specific time period is identified as the unoccupied state.
10. The aforementioned room occupancy-dependent component output unit is: The facility management device according to claim 1, characterized in that, based on the time of the unoccupied state, it outputs the power component consumed by continuously operating equipment during the time of the unoccupied state, and subtracts the power component consumed by the continuously operating equipment from the power data of the equipment using the outlets to output a component that depends on the number of people in the floor or area.
11. The aforementioned room occupancy-dependent component output unit is: The facility management device according to claim 10, characterized in that, based on the time of the unoccupied state, it outputs the power component consumed by the continuously operating equipment from the average value of the power data of the equipment using the outlet during the time of the unoccupied state.
12. The aforementioned room occupancy-dependent component output unit is: The facility management device according to claim 11, characterized in that it corrects the value of the power component that depends on the number of people in the room during the unoccupied period to zero.
13. The aforementioned room occupancy index output unit is: The facility management device according to claim 1, characterized in that the occupancy index is set by multiplying the power component which depends on the number of occupants by a conversion coefficient which is set to a value based on the average amount of power used per person for the devices using the outlets.
14. The aforementioned room occupancy index output unit is: The facility management device according to claim 12, characterized in that the occupancy index is set by multiplying the power component which depends on the number of occupants by a conversion coefficient which is set to be the reciprocal of the average power consumption per person for the devices using the outlets.
15. The facility includes another occupancy-dependent component output unit that outputs a power component of the power data of the facility that depends on the number of people in the room, based on the time the room is unoccupied. The aforementioned room occupancy index output unit is: The facility management device according to claim 1, characterized in that it outputs the number of occupants index from the power components dependent on the number of occupants output by the occupant-dependent component output unit and the other occupant-dependent component output unit.
16. The first acquisition unit performs a first acquisition step of acquiring power data of outlet-using devices, which are electronic devices that use outlets in the facility area, The second acquisition unit performs a second acquisition step of acquiring equipment operating status data indicating the operating status of the equipment in the area, The unmanned state time estimation unit estimates the unmanned state time of the target area based on the equipment operating status data in an unmanned state time estimation step, The occupancy-dependent component output unit outputs an occupancy-dependent component that depends on the number of people in the room, based on the time the room is unoccupied. The occupancy index output unit outputs an occupancy index related to the number of people in the target area from the power component which depends on the number of people in the room, in an occupancy index output step, A facility management method characterized by having the following features.

Description

This invention relates to a facility management device and a facility management method, and is particularly suitable for application to a facility management device related to a technology for estimating the number of people in a facility area or floor (hereinafter referred to as "floor, etc."). A key characteristic of buildings is the significant variation in user activity across different floors. Specifically, the number of people occupying each floor varies considerably over time. Especially since the COVID-19 pandemic, diverse office and work styles have become established, leading to a further expansion of office diversification. Examples of such office styles include Activity-Based Working (ABW) offices, shared offices, and satellite offices. Regarding techniques for estimating the number of people occupying a floor, there are techniques described in Patent Documents 1 and 2. The technique described in Patent Document 1 utilizes the fact that the amount of power consumed by electrical outlets at predetermined intervals is proportional to the number of people occupying the room during the same time period, and uses the amount of power consumed by electrical outlets instead of the number of people occupying the room. The technique described in Patent Document 2 estimates the number of residents from the number of electrical appliances that are turned on, but it estimates the number of residents from the number of electrical appliances that are actually being used. Japanese Patent Publication No. 2013-020307International Publication No. 2008/152798 This is a system configuration diagram showing an example of the hardware configuration of a building management system equipped with a facility management device according to the first embodiment.This is a system configuration diagram showing a functional configuration example of a building management system including a facility management device according to the first embodiment.Figure 1 is a flowchart illustrating an example of the procedure for estimating the number of people in a room, as an example of a facility management method for the facility management device shown.Figure 3 shows an example of the basic concept of estimating the number of people in the room in step S6.Figure 3 shows an example of the basic concept of estimating the number of people in the room in step S6.Figure 3 shows an example of the basic concept of estimating the number of people in the room in step S6.This figure shows an example of characteristics related to power data for lighting equipment.This figure shows an example of characteristics related to power data from devices using electrical outlets.This figure shows an example of the power data that is collected.This figure shows an example of the power data that is collected.This figure shows an example of information and estimation methods for estimating the unoccupied state of floors, etc.Figure 3 is a flowchart illustrating an example of the procedure for estimating the unattended state time.This figure shows an example of the results of clustering processing on power data from lighting equipment.This figure shows an example of the results of clustering processing on power data from lighting equipment.Figure 2 is a flowchart illustrating an example of the procedure for step S4, the process for calculating average values by time of day on weekdays.Figure 13 shows an example of the results of the average value calculation process.Figure 13 shows an example of the results of the average value calculation process.This flowchart shows an example of the procedure for calculating power components.Figure 3 is a flowchart illustrating an example of the procedure for calculating power components.Figure 16 shows an example of the results of the power component calculation process.Figure 16 shows an example of the results of the power component calculation process.Figure 16 shows an example of the results of the power component calculation process.Figure 3 is a flowchart illustrating an example of the procedure for calculating the occupancy index.This figure shows an example of occupancy indicator data.Figure 2 shows an example of the data managed in the conversion coefficient database.This is a system configuration diagram showing a functional configuration example of a building management system including a facility management device according to the second embodiment.This is a system configuration diagram showing a functional configuration example of a building management system including a facility management device according to the third embodiment.This figure shows an example of the average daily power consumption of electrical devices using electrical outlets on a weekday, averaged over multiple days.This figure shows an example of the average daily power consumption of electrical devices using electrical outlets on a holiday, averaged over multiple days.Figure 23A shows an example of the power component that depends on the nu