JP2017182245A - Maintenance plan supporting system, and maintenance plan supporting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the estimating accuracy of maintenance cost of buildings including their energy consuming equipment.SOLUTION: A maintenance plan supporting system 12 acquires a plural-year initial maintenance plan A0 for a building 2 having energy consuming equipment 4 including an initial maintenance schedule A01 and an initial maintenance cost A02, acquires the hardware efficiency of the energy consuming equipment 4 calculated on the basis of measured data pertaining to energy consumption by the energy consuming equipment 4 in the building 2, figures out the expected energy consumption cost resulting from energy consumption by the energy consuming equipment 4 based on the hardware efficiency, and outputs the maintenance cost based on the expected energy consumption cost.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a technique for supporting the formulation of a building maintenance plan.

Buildings such as commercial buildings and apartment houses are provided with various building facilities such as electrical equipment, air conditioning equipment, and lifting equipment. In general, in order to maintain buildings and building equipment in a good state, maintenance work such as repair, repair, maintenance and inspection is performed on these buildings and building equipment at appropriate times.
The maintenance plan is a plan in which the maintenance work schedule is planned, and the maintenance cost generated within the period of the plan is calculated. By carrying out maintenance work in accordance with the maintenance plan, it is possible to prevent the structural frame of the building and the building equipment from becoming unusable in the medium term or long term, and the structural frame, and The original use, performance, and function of the building equipment are restored and maintained.

Conventionally, various techniques for supporting the formulation of a maintenance plan have been proposed.
For example, a technology that calculates repair costs by taking into account the construction content and price increase rate of building equipment (see, for example, Patent Document 1), and predicts building operation management costs for each fiscal year based on a medium- to long-term maintenance operation plan. There is a technique (for example, refer to Patent Document 2) for displaying together. In addition, for example, there is a technique for predicting necessary repair costs according to a target maintenance level of a building in a building long-term repair plan (see, for example, Patent Document 3). In addition, for example, there is a technology for obtaining planned operation costs based on depreciation costs and power usage costs for each case where equipment is replaced and when equipment is not replaced in order to support the formulation of an appropriate maintenance plan (patent) Reference 4). In addition, for example, there is a technique for predicting a running cost of a predetermined device at each time point within a target period as a probability distribution and obtaining a renewal cost based on the prediction of the running cost (see, for example, Patent Document 5). There is also a technique for managing various types of building information including long-term repairs in a database (see, for example, Patent Document 6).

JP-A-9-34946 JP 2003-345883 A JP 2005-173734 A JP2015-103128A Japanese Unexamined Patent Publication No. 2015-207037 JP 2005-173957 A

By the way, the building facilities include facilities that consume energy by operation (hereinafter referred to as “energy consuming facilities”). Patent Document 2 discloses a technique for calculating an operation management cost including an operation cost (utility cost) of these energy consuming facilities.
However, Patent Document 2 does not describe a specific method for calculating the utility cost. In general, the average energy consumption (hereinafter referred to as “average energy consumption”) consumed by rated energy consuming equipment is published by the manufacturer, and it is possible to predict utility costs by using this average energy consumption. It is. However, the average energy consumption does not reflect individual differences in energy consuming equipment, the operation status in the building, and the maintenance status, and the utility cost is not accurately predicted. In addition, Patent Document 4 does not predict utility costs. Patent document 5 calculates | requires future running cost as probability distribution based on the actual value of the running cost for every working time, and similarly to patent document 2, the individual difference of an energy consumption facility, the operating condition in a building, and The maintenance status is not reflected.
Patent Document 6 discloses a technique for creating a database of various types of information including repair plans. However, this patent document 6 does not disclose the point of linking these and does not support the repair plan.

  An object of the present invention is to provide a maintenance plan support system and a maintenance plan support method that can improve the accuracy of maintenance costs for buildings including energy consuming equipment.

  The present invention provides a maintenance plan acquisition unit for acquiring a maintenance schedule including a maintenance schedule including a maintenance period and a maintenance cost for a plurality of years of a building provided with an energy consumption facility, and energy consumption of the energy consumption facility in the building. A device efficiency acquisition unit that acquires the device efficiency of the energy consuming facility calculated based on the measurement data, or calculates the device efficiency of the energy consuming facility based on the measurement data related to the energy consumption; and the device efficiency Based on the device efficiency acquired or calculated by the acquisition unit, an energy consumption cost calculation unit that calculates an energy consumption cost due to energy consumption of the energy consuming facility, and an energy consumption cost calculated by the energy consumption cost calculation unit A maintenance cost output unit for outputting the maintenance cost; It is characterized in.

  In the maintenance plan support system, the present invention includes a device efficiency prediction unit that obtains a predicted device efficiency in the remaining period of the planned period based on a transition of the device efficiency, and the energy consumption cost calculation unit includes the device The energy consumption cost is obtained based on the expected device efficiency obtained by the efficiency prediction unit.

  The present invention provides a maintenance work cost acquisition unit for acquiring a maintenance work cost actual value required for maintenance work performed on the energy consuming equipment, and energy expected to be reduced by the maintenance work in the maintenance plan support system. A cost-effective output unit that calculates a reduction amount of the consumption cost based on the energy consumption cost obtained by the energy consumption cost calculation unit and outputs the actual maintenance work cost value and the reduction amount; It is characterized by that.

  In the maintenance plan support system, the present invention includes a maintenance schedule changing unit that changes the maintenance schedule, and a maintenance cost calculating unit that calculates a maintenance cost required for the maintenance schedule changed by the maintenance schedule changing unit. And

  In the maintenance plan support system according to the present invention, the maintenance schedule change unit is scheduled for the energy consumption facility in the maintenance schedule based on a change in the equipment efficiency caused by performing maintenance work on the energy consumption facility. It is characterized in that the scheduled time or the number of scheduled maintenance work is changed.

  In the maintenance plan support system, the present invention includes a calculation condition input unit that receives an input of a maintenance cost calculation condition for each single year of the planned period, and the calculation condition includes a designated single year budget or a simple budget. The maintenance cost increase / decrease condition for each year is included, and the maintenance cost calculation unit assigns the maintenance cost in the remaining period of the planned period to each single year in accordance with the calculation condition.

  In the maintenance plan support system according to the present invention, the device efficiency acquisition unit acquires the device efficiency calculated by an energy management system that manages energy consumption of the energy consuming facility.

  The present invention relates to a first step of acquiring a maintenance schedule including a maintenance schedule and a maintenance cost for a plurality of years of a building provided with energy consuming equipment, and energy consumption of the energy consuming equipment in the building. In the second step, the device efficiency of the energy consuming facility calculated based on the measurement data is acquired, or the device efficiency of the energy consuming facility is calculated based on the measurement data related to the energy consumption; A third step of obtaining an energy consumption cost due to energy consumption of the energy consuming equipment based on the acquired or calculated device efficiency, and a step of outputting the maintenance cost based on the energy consumption cost obtained in the third step. Maintenance plan support method characterized by comprising 4 steps To provide.

  In the present invention, since the subsequent energy consumption cost is obtained using the equipment efficiency calculated based on the measurement data related to the energy consumption of the energy consuming equipment in the building, the predicted value of the energy consumption cost becomes accurate, and the maintenance Cost accuracy is increased.

It is a figure which shows typically the structure of the building management system which concerns on embodiment of this invention. It is a block diagram which shows schematic structure of BAS. It is a block diagram which shows schematic structure of an energy management system. It is explanatory drawing of the information which concerns on a maintenance plan. It is a block diagram which shows the functional structure of a maintenance plan assistance system. It is explanatory drawing of life cycle data management. It is a figure which shows notionally the time-sequential transition of apparatus efficiency. It is a figure which shows notionally the transition of the apparatus efficiency of energy consumption equipment in a maintenance plan period. It is a conceptual diagram for demonstrating the energy consumption cost reduction amount in a maintenance plan period. It is explanatory drawing of the change of a maintenance schedule. It is explanatory drawing which shows the flow of the maintenance plan operation | work using a maintenance plan support system. It is a figure which shows an example of the display screen of the calculation result of a maintenance cost. It is a figure which shows an example of the display screen of the calculation result of a maintenance cost.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram schematically illustrating a configuration of a building management system 1 according to the present embodiment.
The building management system 1 enables various types of management of the building 2 in cooperation with a plurality of systems that manage the building 2. This management includes management related to a maintenance plan to be described later. The building 2 managed by the building management system 1 is, for example, a building for commercial use such as a commercial building or a factory, or a building composed of a plurality of dwelling units such as an apartment house, and includes a plurality of building facilities 3. Building.

  The building equipment 3 is attached to the building 2 to satisfy various functions required for the building 2, to protect the health of people who live in or use the building 2, and to enhance safety, work efficiency and comfort. This refers to various types of equipment items that are subject to maintenance work described later. Examples of the building equipment 3 include air conditioning equipment, water supply / drainage equipment, fire extinguishing equipment, disaster prevention equipment, electric supply equipment, transport equipment, sanitary equipment, gas equipment, and the like.

  Air conditioning equipment is equipment that keeps environmental factors such as temperature, humidity, airflow, radiant heat, airborne dust, bacteria, odors, and toxic gases in good condition for indoor people or goods, such as cooling, heating, and ventilation. It has the function of. The air conditioning equipment includes, for example, a heat source equipment such as a refrigerator that produces cold water for cooling, a pump that conveys the cold water to a predetermined location, and the like. The water supply / drainage facility is a facility that includes a water supply facility and a drainage facility, supplies water necessary for business and daily life to the building 2, and discharges water consumed or unnecessary in the building 2 to the outside. Fire extinguishing equipment is equipment provided to mitigate the fire and prevent the spread of fire. The disaster prevention facilities are various facilities provided to safely protect the building 2 and the residents and users of the building 2 from disasters. The electric supply equipment is equipment for power generation, transformation, power transmission, power distribution, etc. in the building 2 or equipment provided for the use of electricity, and includes, for example, a transformer and a lighting fixture. The transportation facility is a facility for transporting residents and users of the building 2 and luggage, and includes facilities such as an elevator and an escalator. Sanitary facilities are around toilets and sinks (kitchens). The gas facility is a facility that uses gas fuel in the building 2 and a facility that is provided for using the gas fuel.

Some of the building facilities 3 are facilities that consume energy supplied from the outside of the building 2, and each of the facilities is hereinafter referred to as an energy consuming facility 4 and is a building facility 3 that does not consume energy ( For example, it will be distinguished from a lightning rod or a smoke exhaust duct. However, the energy consuming equipment 4 does not necessarily coincide with the building equipment 3 generally handled in the field of building maintenance technology. That is, the energy consuming equipment 4 is at least equipment to be subjected to maintenance work to be described later, and may be distinguished for each equipment that consumes energy. The building equipment 3 and the energy consuming equipment 4 are generally composed of a set of one or a plurality of equipment, devices, and equipment.
Examples of the energy consumed by the energy consuming equipment 4 include fuel (gas, petroleum) and electricity.

  As shown in FIG. 1, the building management system 1 includes a BIM system 6, a BAS 8, an energy management system 10, and a maintenance plan support system 12. The BIM system 6, the BAS 8, the energy management system 10, and the maintenance plan support system 12 are connected to each other through a telecommunication line 11 such as a LAN or the Internet so as to be able to perform data communication.

The BIM system 6 is a building information management system that integrally manages building information, and is realized by, for example, a personal computer system including a computer device, an input device, and an output device.
The building information is information including the shape information of the building 2 and various attribute information associated with the shape information, and a BIM model is used for the building information. The BIM model is a model constructed using BIM (BIM: Building Information Modeling). Specifically, the BIM model includes, in addition to the three-dimensional shape information of the building 2 created on the computer, the attribute information related to the building such as the name and area of the room, the specifications and performance of the materials and members, and the finish. It is a building information model. This BIM model is created using a computer program called so-called BIM software executed on a computer.

  As shown in FIG. 1, the BIM system 6 includes a BIM database 13, and BIM model data 14 obtained by converting the BIM model of the building 2 into data is stored in the BIM database 13. The BIM model data 14 includes, for example, three-dimensional CAD data as the three-dimensional shape information of the building 2, and the external shape, the internal shape, and the structure of the building 2 are specified by the three-dimensional CAD data. The BIM model data 14 includes information equivalent to a design book and a device specification as attribute information.

The design book is a drawing and a document including information that enables a company having the same level of technology as the construction contractor of the building 2 to manufacture and install the same building equipment 3. The design documents are generally provided by the construction contractor when the building 2 is completed. For example, implementation specifications, calculation sheets, detailed drawings, construction management records, quantity tables, purchased items such as equipment lists, instruction manuals, and completed photographs. Etc. are included. Among these, for example, in the instruction manual, the equipment outline of the building equipment 3, equipment specifications (information on the equipment design conditions and main specifications), operation method, failure handling procedure manual, system diagram, etc. In addition, instruction manuals issued by manufacturers of major equipment and major equipment, lists of equipment and parts names, standards, quantities, replacement time, replacement methods, set values, standard values, etc., and inspection and maintenance It contains information on how and how.
Such a design document is also referred to when the same construction contractor makes a repair plan by referring to existing members when the building 2 is repaired.
The equipment specification is a document that indicates the ability, quality, performance, construction method, manufacturer, and the like of the equipment that constitutes the building facility 3 in sentences and numerical values.

  Of course, the BIM model data 14 may include arbitrary information other than the above as shape information and attribute information.

FIG. 2 is a block diagram showing a schematic configuration of the BAS 8.
The BAS 8 is a building facility centralized monitoring control system called a building automation system. As shown in FIG. 2, the BAS 8 includes a central monitoring device 16, a measurement unit 17, a facility control unit 18, a BAS database 19, and an input / output device 20, and the energy consumption facility 4 included in the building 2. Control and monitor.

The central monitoring device 16 is a device that centrally manages each part of the BAS 8.
The measurement unit 17 includes various sensors and measurement meter devices, measures the indoor environment of the building 2, the operating status, operating status, and energy consumption of the energy consuming equipment 4, and outputs to the central monitoring device 16 via, for example, a LAN. To do. The indoor environment is an element that varies the operation state such as the operation frequency and output of the energy consuming equipment 4 among the physical quantities obtained by measuring the space in the building 2. The energy consumption amount is automatically acquired from a sensor or a reading device provided in an instrument such as a wattmeter or a gas meter installed in the building 2.
The equipment control unit 18 remotely controls the operation of the energy consuming equipment 4.
The input / output device 20 is an input device for giving the central monitoring device 16 various commands such as an output device such as a display device and a printing device, and a keyboard and various operation switches. To be served.

The central monitoring device 16 includes a schedule operation function, an operation state control function, an abnormality monitoring function, and an energy consumption monitoring function as centralized monitoring functions of the energy consuming equipment 4.
The schedule operation function is a function for operating the energy consuming equipment 4 according to a predetermined schedule. The operation state control function is a function for setting the operation state of the energy consuming equipment 4 to an operation state suitable for the indoor environment. The abnormality monitoring function is a function for monitoring the occurrence or failure of the energy consuming equipment 4. The energy consumption monitoring function is a function for monitoring the energy consumption amount of the energy consuming equipment 4.

  When the central monitoring device 16 controls the operation of the energy consuming equipment 4, the central monitoring device 16 gives control information to the equipment control unit 18 based on various measurement data obtained from the measurement unit 17. The energy consuming equipment 4 is controlled based on the instruction. Thereby, the schedule operation of the energy consuming equipment 4 and the control of the operation state are performed.

  The BAS database 19 stores various measurement data measured by the measurement unit 17 and various data generated by the central monitoring device 16. In these data, the measurement data regarding the energy consumption of the energy consuming equipment 4 is included.

FIG. 3 is a block diagram illustrating a schematic configuration of the energy management system 10.
The energy management system 10 acquires various measurement data measured by the BAS 8 and evaluates the rationality of energy use in the building 2 based on these measurement data and data appropriately input by the user. As shown in FIG. 3, the energy management system 10 includes a data mutual conversion unit 21 and an energy management device 22.
The data mutual conversion unit 21 is an interface for transmitting / receiving data to / from the BAS 8. Further, the data mutual conversion unit 21 mutually converts the data format of the measurement data measured by the BAS 8 and the data format of the data output to the BAS 8 from the energy management system 10 side.

The energy management device 22 is a device including a rationality evaluation unit 23, a device efficiency calculation unit 24, and an EMS (Energy Management System) database 25, and is configured by, for example, a computer system.
The rationality evaluation unit 23 evaluates the rationality of the energy usage status in the building 2 in light of the shape, size, usage, and further the load fluctuation status of the energy consuming equipment 4. In particular, the rationality evaluation unit 23 evaluates the rationality of the energy usage status for each of supply, conversion, and demand in the energy flow, and comprehensively evaluates the rationality of the energy usage status based on these evaluation results. .
More specifically, in the energy management system 10, in energy management of the building 2 having a plurality of energy consuming facilities 4, a plurality of items (hereinafter, “ "Management items"). For each management item, a management reference value that is a numerical value at which the evaluation result of the management item is “reasonable” is set.
The rationality evaluation unit 23 determines whether the management reference value is satisfied for each management item based on the measurement data acquired through the data mutual conversion unit 21 and the degree of deviation from the management reference value. Evaluate the rationality based on the results of management item management.

The device efficiency calculation unit 24 calculates the device efficiency of the energy consuming equipment 4 based on the measurement data acquired from the BAS 8.
The equipment efficiency is an index value indicating the efficiency of energy consumption in the energy consuming equipment 4, and is determined by the ratio of the output of the energy consuming equipment 4 and the input to the energy consuming equipment 4.
When the energy consuming equipment 4 is not composed of a single device but includes a plurality of equipment and a plurality of devices, the equipment efficiency of the energy consuming equipment 4 is obtained for each equipment and each equipment. This is the average value of equipment efficiency. In the calculation of the average value, a load average with different weights may be used for each facility or device.
Moreover, the physical quantity used for input and output is appropriately set for each energy consumption facility 4, facility, or device to be calculated. For example, taking a refrigerator as an example, the amount of production heat is used for output, the amount of heat consumed is used for input, and the device efficiency is obtained by output / input. For example, the equipment efficiency of a refrigerator is a so-called coefficient of performance (COP).

The device efficiency calculation unit 24 calculates the device efficiency of each energy consuming facility 4 at a predetermined timing and stores it in the EMS database 25.
The EMS database 25 includes the energy consumption equipment 4 to be calculated, or the equipment, equipment, or device included in the energy consumption equipment 4 that includes the equipment efficiency, the date and time when the maintenance work was performed, and the date when the equipment efficiency was calculated. Store it linked to. As a result, for each of the energy consuming equipment 4 and the equipment, equipment, and devices included in the energy consuming equipment 4, data indicating the time-series transition of each equipment efficiency is accumulated. In addition to device efficiency, the EMS database 25 appropriately stores various data necessary for energy management (for example, energy consumption).

  For example, the technology described in International Publication No. 2010/092805 or Japanese Patent Application Laid-Open No. 2011-227654, which is a Japanese application publication, can be appropriately used for the energy management system 10.

The maintenance plan support system 12 is a system that supports the creation of a maintenance plan by a user such as the owner or manager of the building 2.
Here, maintenance refers to maintaining the building 2 having a large number of building facilities 3 in a good state, and includes all actions aimed at maintaining a good state. Examples of this action include refurbishment, renewal, repair, repair, and inspection. In the following description, when it is not necessary to distinguish between these actions, these actions are referred to as “maintenance work”.

FIG. 4 is an explanatory diagram of information included in the maintenance plan.
As shown in the figure, the maintenance plan includes a maintenance schedule and maintenance costs.
The maintenance schedule indicates a schedule of maintenance work during the maintenance plan period. The maintenance plan period is a period set by the user as an execution period of the maintenance plan by the maintenance plan support system 12. During this implementation period, for example, the data related to the building 2 is registered in the building management system 1 (or at least the maintenance plan support system 12), and the building 2 is started from the timing designated by the user after the various management becomes possible. The time for replacement or the period until the building life is used. The maintenance schedule includes a maintenance plan period, the building equipment 3 to be maintained, the contents of the maintenance work scheduled for each building equipment 3, and the execution time of the maintenance work.

Maintenance cost indicates the cost incurred during the maintenance plan period.
As shown in FIG. 4, this maintenance cost includes a maintenance work cost and an estimated energy consumption cost.
The maintenance work cost is an estimated cost required for each maintenance work of the building equipment 3 and the energy consuming equipment 4 during the maintenance plan period.
The estimated energy consumption cost is an estimated cost for each energy consuming equipment 4 based on the expected energy demand (estimated energy demand), equipment efficiency, and energy unit price during the maintenance plan period. .

More specifically, when the maintenance plan is formulated, the energy demand of each energy consuming facility 4 during the maintenance plan period is estimated. In general, a relationship of “energy consumption = energy demand amount / equipment efficiency” is established between the energy demand, the energy consumption, and the equipment efficiency. Therefore, the energy consumption amount in the maintenance plan period is estimated based on the estimated energy demand amount and the equipment efficiency, and the energy consumption cost is estimated by multiplying the energy consumption amount by the energy unit price.
For the device efficiency, a value indicated by a manufacturer's technical data or a value already evaluated by the energy management system 10 or the like is used. As the energy unit price, a predicted value in the maintenance plan period is used. The existing appropriate method is used for the prediction of the energy unit price.
As shown in FIG. 4, this maintenance plan also includes information on the estimated energy demand and the energy unit price, which are the basis for calculating the estimated energy consumption cost. Arbitrary methods generally used when formulating a long-term or medium-term repair plan are used for deriving and setting the estimated energy demand and energy unit price.

As described above, the maintenance work is divided into repair, renewal, repair, repair, inspection and the like according to the contents.
Renovation is to improve the performance and functions of building equipment 3 and energy consuming equipment 4 whose relative value has declined due to deterioration over time or social or technological change, exceeding the level at the time of installation. Refers to the act of The act relating to the renovation includes an operation (so-called replacement) for replacing the existing building equipment 3 and the energy consuming equipment 4 with high-performance or high-function equipment.
Renewal refers to the act of restoring the performance and function of the building equipment 3 and the energy consuming equipment 4 to the level at the time of installation (restoration). The act relating to the update includes an operation of replacing all of the existing building equipment 3 and the energy consuming equipment 4, or some parts and some equipment with those having equivalent performance and function.
The repair refers to an action for making the performance and function of the building equipment 3 and the energy consuming equipment 4 usable without any trouble even if the original state is not restored. In addition, renewal is not distinguished from repair, and these may be collectively referred to as repair.
Repair refers to an act of repairing a damaged part in the building equipment 3 and the energy consuming equipment 4.
The inspection refers to an act of checking whether there is a damaged portion of the building equipment 3 and the energy consuming equipment 4 and checking whether there is any abnormality in operation or function. The inspection also includes periodic small parts replacement work that is not included in the repair.
These repairs and inspections are also called maintenance.

  In general, maintenance plans related to repairs, and maintenance plans with a maintenance plan period of about 1 to 3 years are referred to as short-term repair plans. Maintenance plans over 3 years are referred to as medium-term repair plans or long-term repair plans. It is called. That is, this maintenance plan support system 12 is suitably used for supporting short-term repair plans, medium-term repair plans, and long-term repair plans.

FIG. 5 is a block diagram showing a functional configuration of the maintenance plan support system 12.
As shown in FIG. 5, the maintenance plan support system 12 includes an inter-system data linkage unit 32, a user input unit 34, a display unit 35, a database 36, and a maintenance plan unit 38.
The maintenance plan support system 12 is a computer program that causes a computer system including at least a personal computer (storage device, arithmetic device), an input device, an output device (including a display device), and a communication device to realize the functions of the above-described units. It is realized by executing.

The inter-system data linkage unit 32 acquires data stored in the BIM database 13, the BAS database 19, and the EMS database 25 from each of the BIM system 6, the BAS 8, and the energy management system 10 through the telecommunication line 11. . That is, the inter-system data linkage unit 32 corresponds to an acquisition unit that acquires various types of information from each of the BIM system 6, the BAS 8, and the energy management system 10. Thus, since the inter-system data linkage unit 32 can acquire various types of data from other systems, it is not necessary for the user to re-enter the maintenance plan support system 12 for data already managed by other systems. Become.
The user input unit 34 receives data input by the user.
Data acquired by the inter-system data linkage unit 32 and data input from the user input unit 34 are stored in the database 36 as appropriate.
The display unit 35 is a so-called display device that displays various information and presents it to the user.

The database 36 is a storage device that stores various data used in the maintenance plan support system 12. As shown in FIG. 5, the database 36 stores an initial maintenance plan A0, initial device efficiency data A1, and various data input by the user.
The initial maintenance plan A0 is data of a maintenance plan at the time of initial formulation. This data includes an initial maintenance schedule A01, which is a maintenance schedule at the beginning of formulation, and an initial maintenance cost A02, which is a maintenance cost at the beginning of formulation.
The device efficiency initial data A1 is data indicating the above-described device efficiency of the energy consuming facility 4 at the beginning of the maintenance plan formulation.
The initial maintenance plan A0 and the device efficiency initial data A1 are acquired by at least one of the inter-system data linkage unit 32 and the user input unit 34.
For example, a general method for formulating a long-term repair plan or a medium-term repair plan is used as the first method for formulating a maintenance plan.

The database 36 also stores various data acquired by the intersystem data linkage unit 32 from each of the BIM system 6, the BAS 8, and the energy management system 10.
Of the data stored in the database 36, the data of the elements that change in time series is accumulated in the database 36 in an appropriate data format that allows the change to be specified by graphing or formulating. Such data includes, for example, the equipment efficiency of the energy consuming equipment 4.

  Here, the maintenance plan support system 12 has a life cycle data management function for centralizing and managing documents related to the life cycle. In order to realize this life cycle data management function, the database 36 stores various documents created in each step of the life cycle as data.

FIG. 6 is an explanatory diagram of life cycle data management.
The life cycle data management function is a useful function when the user calculates the life cycle cost of the building 2.
The life cycle cost is a cost required from the design of the building 2 to construction, operation, and disposal. The cost required for design and construction corresponds to a so-called initial cost, and the cost required for operation and disposal corresponds to a running cost. In each process of design, construction, operation, and disposal, documents (printed matter) such as various books and materials and electronic data are usually created. These documents and electronic data are generally managed by the creator and the owner of the building 2, and are not managed collectively. Therefore, when the user calculates the life cycle cost of the building 2, it is necessary to collect these documents and electronic data from people, which requires great efforts.
On the other hand, in the maintenance plan support system 12, since these documents and electronic data are stored in the database 36, the life cycle cost of the building 2 can be easily calculated.

  It should be noted that any method is used to convert the document that is a printed material into data. For example, there is a technique in which a paper medium on which books and materials are printed is read by a scanner device and converted into electronic data. In addition, a large number of electronic data used as a basis for printing on a paper medium can be processed or used as it is.

  Among these documents and electronic data, what each of the BIM system 6, BAS 8, and energy management system 10 holds is acquired by the intersystem data linkage unit 32 and stored in the database 36. In this case, document data conversion has already been performed by the BIM system 6, BAS 8, and energy management system 10 that are data sources. Of course, as the data is stored in the database 36, an appropriate process may be performed on the acquired data.

  In the building management system 1, for example, the BIM system 6 holds, in the BIM database 13, design books, equipment specifications, and maintenance plans created in the process of design and construction (construction). The BAS 8 holds a document and electronic data related to maintenance / inspection management in the BAS database 19. The energy management system 10 holds documents and electronic data related to energy management of the energy consuming equipment 4 in the EMS database 25. Documents and electronic data related to maintenance, inspection, and energy management are created in the operation process of the building 2.

  As shown in FIG. 6, for example, the following data is stored in the database 36 based on these documents and electronic data. That is, CAD data and device list data are stored based on the design book, device technical data is stored based on the device specification, and the initial maintenance plan A0 is stored based on the maintenance plan. Maintenance / inspection data and equipment management ledger data are stored based on maintenance / inspection management documents and electronic data, and energy consumption data, energy cost data, and equipment efficiency data are stored in energy management documents and electronic data. Stored based on

The CAD data is design data of the housing of the building 2, and the shape and structure of the housing are specified by this data.
The equipment list data is data listing facilities, equipment, and devices provided in the building equipment 3.
The equipment technical data is technical data related to facilities, equipment, and devices provided in the building equipment 3. The information included in the technical data includes the equipment outline, equipment specifications, operation method, failure response procedure manual, system diagram, manufacturer's instruction manual, parts information (name, standard, quantity, replacement time, replacement Methods), set values, standard values, inspection / maintenance methods, etc.

The inspection / maintenance data indicates information related to inspection and maintenance for the building facility 3. This information includes schedule information indicating the schedule of maintenance work and result information indicating the result of maintenance work. The maintenance work schedule information includes, for example, a maintenance work cycle (frequency), scheduled maintenance work contents, inspection items, and the like. The maintenance work result information includes, for example, the work date and time and the inspection result.
The equipment management ledger data is data indicating the repair history and the disposal history performed on the equipment, equipment, and devices included in each of the building equipment 3. The repair history includes a repair date, repair contents, and expenses required for repair (repair cost). The disposal history includes the disposal date, the waste, and the cost (disposal cost) required for disposal.

The energy consumption data is data indicating the energy consumption of the energy consuming equipment 4. The energy consumption data includes the energy consumption for each equipment, device, and device included in the energy consumption equipment 4. Also, these energy consumption amounts are shown separately for each energy type.
The energy cost data is data including information necessary for calculating the energy consumption cost based on the energy consumption data. For example, the energy cost data includes the energy type and the energy unit price for each period.

  The device efficiency data is data indicating the above-described device efficiency of the energy consuming equipment 4. This equipment efficiency data includes equipment, equipment, and equipment efficiency of each equipment provided in the energy consuming equipment 4. Each time the device efficiency is acquired, the device efficiency is stored in the device efficiency data so that the past time-series transition can be specified.

  As described above, a value obtained by multiplying the energy consumption by the device efficiency corresponds to the energy demand. In other words, if data indicating the energy demand of the energy consuming equipment 4 is acquired instead of either energy consumption or equipment efficiency, the energy consumption or equipment efficiency can be calculated from the energy demand. Is possible.

Among these various data, data corresponding to the operation process is acquired from the BAS 8 and the energy management system 10 by the inter-system data linkage unit 32 at a predetermined frequency and stored in the database 36. This predetermined frequency enables calculation of a transition curve f of equipment efficiency to be described later and a recovery amount g at least for each maintenance operation, and sufficient data is accumulated to execute a simulation by a maintenance plan simulation unit 44 to be described later. Frequency.
In the building management system 1, various data stored in the database 36 of the maintenance plan support system 12 can be referred to from the BIM system 6, the BAS 8, and the energy management system 10. Specifically, the inter-system data linkage unit 32 of the maintenance plan support system 12 has a function of receiving a request from another system, reading the requested information from the database 36, and returning it to the requesting system.
Thereby, in the building management system 1, since each of the BIM system 6, BAS8, and the energy management system 10 can refer to the various data centrally managed by the maintenance plan support system 12, each is more advanced, In addition, precise management can be realized.

Returning to FIG. 5, the maintenance plan unit 38 realizes an energy consumption cost prediction function, a maintenance cost correction function, a cost-effectiveness output function, and a maintenance plan simulation function.
The energy consumption cost prediction function is a function for predicting the energy consumption cost expected in the remaining period of the maintenance plan period of the initial maintenance plan A0. The maintenance cost correction function is a function for correcting the initial maintenance cost A02 based on the estimated energy consumption cost. The cost-effective output function is a function for outputting the cost-effectiveness of maintenance work performed on the energy consuming equipment 4. The maintenance plan simulation function is a function for simulating a maintenance plan in the remaining period. These functions assist the user in reviewing the initial maintenance plan A0.

As shown in FIG. 5, the maintenance plan unit 38 includes an energy consumption cost calculation unit 40, a maintenance cost change unit 41, a cost-effectiveness output unit 42, and a maintenance plan simulation unit 44.
The energy consumption cost calculation unit 40 realizes the energy consumption cost prediction function, and includes a device efficiency prediction unit 50 and a cost prediction unit 51.
The equipment efficiency prediction unit 50 obtains expected equipment efficiency (hereinafter referred to as “equipment efficiency prediction value”) in the remaining period of the maintenance plan period. That is, the equipment efficiency may be reduced due to aging of the energy consuming equipment 4 and may also be lowered by a change in an environment in which the energy consuming equipment 4 is installed (hereinafter referred to as “installation environment”).
The cost prediction unit 51 obtains a predicted value of energy consumption cost expected in the remaining period of the maintenance plan period (hereinafter referred to as “energy consumption cost prediction value”) based on the predicted device efficiency value.

Calculation of the device efficiency prediction value by the device efficiency prediction unit 50 will be described in detail.
FIG. 7 is a diagram conceptually showing a time-series transition of device efficiency. It should be noted that the transition of device efficiency shown in the figure does not necessarily match the actual one.
In general, the device efficiency of the energy consuming equipment 4 decreases with the passage of operating time. The standard transition of the device efficiency is specified from, for example, technical data provided by the manufacturer of the energy consuming equipment 4. In FIG. 7, it is assumed that a graph B1 shows a standard transition of device efficiency.
On the other hand, the transition of equipment efficiency is greatly affected not only by individual differences in energy consuming equipment 4, but also by the usage status (installation environment, frequency of use, etc.) in building 2, so as specified from the manufacturer's technical data, etc. Does not change, for example, as shown in the graph B2, the transition is different from the graph B1.

Furthermore, when maintenance work is performed on the energy consuming equipment 4, the transition of the equipment efficiency thereafter is different from the graph B1 and the graph B2 even when used in the same building 2, and the transition of the equipment efficiency is The tendency according to the content of the maintenance work is shown (for example, graph B3, graph B4). For example, when the energy consuming equipment 4 to be maintained is an air-conditioning facility, maintenance that involves only refrigerant pipe cleaning and refrigerant replacement, and maintenance that involves replacement of a refrigerator in addition to refrigerant pipe cleaning and refrigerant replacement. The work reduces the decline in equipment efficiency more gradually. Further, for example, even in maintenance work only for refrigerant replacement, the tendency of deterioration with age of the refrigerant varies depending on the type of refrigerant to be replaced, and therefore, there is a difference in the transition of equipment efficiency.
Therefore, the transition of the equipment efficiency needs to be specified at least for each maintenance work (more precisely, the content of the maintenance work).

Therefore, for each maintenance work, the equipment efficiency prediction unit 50 obtains a transition curve f (FIG. 8) of equipment efficiency in the period until the next maintenance work, and stores this in the database 36 in association with the contents of the maintenance work. ing. For maintenance work in which the transition curve f is already stored in the database 36, it is not always necessary to newly determine the transition curve f.
The device efficiency transition curve f is obtained by formulating a time-series transition of device efficiency based on each device efficiency data in the calculation target period (the data source is the device efficiency data).
An appropriate method (for example, linear approximation or nonlinear approximation) based on data analysis is used for this mathematical expression. In addition, in formulating the transition of the device efficiency, the operating time of the energy consuming equipment 4 is used for the time axis, not the elapsed time after the installation of the energy consuming equipment 4.
It can be said that each of the transition curves f of the device efficiency obtained in this way indicates deterioration of the energy consuming equipment 4 with time.

FIG. 8 is a diagram conceptually showing the transition of the equipment efficiency of the energy consuming equipment 4 during the maintenance plan period.
In the same figure, time points C1, C2,... Indicate the execution time when maintenance work was performed. And as above-mentioned, in the period between each of time C1, C2, ..., apparatus efficiency changes according to the transition curve f according to the content of the maintenance work performed immediately before.
In addition, since the performance of the energy consuming equipment 4 is restored by the maintenance work on the energy consuming equipment 4, as shown in the figure, the equipment efficiency depends on the contents of the maintenance work at each of the time points C1, C2,. Recovers. The recovery amount g of equipment efficiency is obtained from the difference in equipment efficiency immediately before and after the maintenance work. Further, the device efficiency immediately before and after the maintenance work is specified based on the device efficiency data. The equipment efficiency prediction unit 50 also obtains the equipment efficiency recovery amount g for each maintenance work, and stores this in the database 36 in association with the contents of the maintenance work.

In this maintenance plan support system 12, on the premise that maintenance work on the energy consuming equipment 4 has some influence on the equipment efficiency regardless of the work content, the transition curve f of the equipment efficiency for all the maintenance work carried out. , And a recovery amount g is required.
However, for maintenance work that clearly does not affect equipment efficiency (for example, work that does not cause any change to equipment, equipment, and parts), calculation of the equipment efficiency transition curve f and recovery amount g May be excluded.

In addition, the transition curve f and the recovery amount g of the equipment efficiency after the maintenance work are based on the elapsed time since the maintenance work was performed, the change in equipment efficiency indicated by the equipment efficiency data, and the content of the maintenance work. Alternatively, it may be specified using an approximate expression based on multivariate analysis.
When the planned maintenance work is the replacement of the energy consuming equipment 4, the equipment efficiency transition curve f and the recovery amount g include the initial values of the equipment efficiency of the equipment, equipment, and equipment to be replaced, Used for the recovery amount g corresponding to the maintenance work. In addition, the transition of the device efficiency specified from the technical data of the manufacturer is used for the transition curve f corresponding to the maintenance work.
Further, the transition curve f of the device efficiency and the recovery amount g are stored in the database 36 so that they can be referred to anytime from other systems or users. The equipment efficiency transition curve f and the recovery amount g also serve as an index indicating the effectiveness of the work contents of the maintenance work. Therefore, when the initial maintenance plan A0 for the other building 2 is formulated, it is referred to by the user or the like. Is done.

  When the device efficiency prediction unit 50 obtains a device efficiency prediction value, it uses the device efficiency transition curve f and the device efficiency recovery amount g as follows. That is, the transition of equipment efficiency is changed in accordance with the equipment efficiency transition curve f and the recovery amount g at the timing of the maintenance work scheduled in the future in the maintenance schedule.

Next, calculation of the energy consumption cost prediction value by the cost prediction unit 51 will be described.
The cost predicting unit 51 obtains the estimated energy consumption in the remaining period of the maintenance plan period based on the estimated energy demand in the remaining period of the maintenance plan period and the above-described predicted device efficiency. Then, the cost prediction unit 51 obtains an energy consumption cost prediction value based on the estimated energy consumption and the estimated energy unit price.

  The expected energy demand is obtained based on the energy consumption data stored in the database 36. That is, the cost prediction unit 51 multiplies each energy consumption indicated by the energy consumption data by the device efficiency corresponding to the acquisition time of the energy consumption, and converts the energy consumption into an energy demand. These energy demands show the time-series transition of the energy demands of the energy consuming equipment 4 as well as the energy consumptions. Then, the cost prediction unit 51 formulates the time series transition of the energy demand based on these energy demands, and obtains the expected energy demand in the remaining period of the maintenance plan period based on the mathematical formulas.

  As the estimated energy unit price, the energy unit price (FIG. 4) included in the initial maintenance plan A0 is used. In this case, a value input by the user or the like may be used as the energy unit price. Moreover, you may obtain | require the estimated energy unit price in the remaining period of a maintenance plan period based on the past transition of the energy unit price shown by energy cost data.

In FIG. 5, the maintenance cost changing unit 41 realizes the maintenance cost correction function.
That is, when the predicted energy consumption cost value is input from the energy consumption cost calculation unit 40, the maintenance cost changing unit 41 uses the energy consumption cost (FIG. 4) estimated in the initial maintenance cost A02 as the energy consumption cost. The predicted value is changed to the predicted value, and the changed initial maintenance cost A02 is output to the display unit 35.
The initial maintenance plan A0 stored in the database 36 may be changed and updated based on the changed initial maintenance cost A02.
Since the energy consumption cost prediction value is an accurate prediction of the energy consumption cost of the remaining period in the building 2 by the equipment efficiency prediction value, the accuracy of the maintenance cost in the remaining period is also improved.
In addition to this, in the calculation of the predicted energy consumption cost, the predicted energy demand for the remaining period of the maintenance plan period is also changed based on the transition of the past energy demand in the building 2 . Therefore, since the energy demand estimated in the building 2 becomes more accurate, the predicted energy consumption cost becomes more accurate, and accordingly, the accuracy of the maintenance cost in the remaining period is further improved.

The cost-effective output unit 42 realizes the cost-effective output function, and outputs a comparison between the maintenance work cost actual value and the energy consumption cost reduction amount.
The maintenance work cost actual value is an amount of maintenance work cost actually generated by one or a plurality of maintenance work already performed on the energy consuming equipment 4. The actual maintenance work cost value is acquired from the repair cost included in the above-described device management ledger data, input from the user input unit 34, or the like.

  The amount of energy consumption cost reduction is the amount of energy consumption cost reduction expected due to one or more maintenance operations being performed. The energy consumption cost reduction amount is obtained as follows based on the energy consumption cost estimated in the immediately preceding initial maintenance cost A02 and the energy consumption cost prediction value obtained by the cost prediction unit 51.

FIG. 9 is a conceptual diagram for explaining the amount of energy consumption cost reduction during the maintenance plan period.
In the figure, a graph E1 conceptually shows an expected energy consumption cost before the maintenance work, that is, an energy consumption cost estimated by an initial maintenance cost A02. The value of this expected energy consumption cost varies depending on factors such as maintenance work performed in accordance with the maintenance schedule of the initial maintenance plan A0.
The graph E2 conceptually shows the energy consumption cost predicted value calculated by the energy consumption cost calculation unit 40 after the maintenance work at the time point D is performed. In the illustrated example, it is assumed that the recovery amount g of the equipment efficiency is largely recovered by the maintenance work at the time point D than when the initial maintenance cost A02 is estimated, and the transition curve f does not change.

  The energy consumption cost reduction amount corresponds to a difference value F obtained by subtracting the time integration value of the graph E2 from the time integration value of the graph E1. For a maintenance work cost actual value that is a cost spent on one or a plurality of maintenance work, a difference value F is used as a value for user evaluation of a reduction effect (cost effectiveness) of energy consumption cost obtained by the maintenance work. A value obtained by dividing a certain energy consumption cost reduction amount by a maintenance work cost actual value (hereinafter referred to as “cost-effectiveness index value”) is obtained by the cost-effectiveness output unit 42.

The cost-effectiveness output unit 42 displays the cost-effectiveness index value on the display unit 35, and allows the user to evaluate the cost-effectiveness of the maintenance work.
As long as the output mode allows the user to evaluate the cost effectiveness of the maintenance work, any mode can be adopted as the output mode of the maintenance work cost actual value and the energy consumption cost reduction amount. For example, as shown in FIG. 9, a change in energy consumption cost reduction amount during the maintenance plan period may be displayed. Further, in the maintenance work cost results, when work costs that are not involved in the change in equipment efficiency can be distinguished, the cost effectiveness can be more accurately evaluated by outputting the work costs without the work costs.
The cost-effectiveness output unit 42 outputs a cost-effectiveness index value, a maintenance work cost actual value, and an energy consumption cost reduction amount for each maintenance work when a plurality of maintenance work is performed. Also good.

  In FIG. 5, the maintenance plan simulation unit 44 realizes the maintenance plan simulation function, and includes a maintenance schedule change unit 60, a maintenance cost recalculation unit 61, and a single year maintenance cost calculation unit 62. Yes.

The maintenance schedule changing unit 60 changes the initial maintenance schedule A01 of the initial maintenance plan A0, and includes a user input changing unit 64 and an automatic changing unit 65.
The user input changing unit 64 changes the initial maintenance schedule A01 based on the user input from the user input unit 34. Examples of the change contents include a change of the scheduled maintenance work execution time, cancellation of the maintenance work, addition of the maintenance work, and change of the work contents of the maintenance work.

The automatic changing unit 65 changes the scheduled maintenance work execution time, cancels the maintenance work, and adds the maintenance work to the initial maintenance schedule A01 based on the predicted device efficiency value in the remaining maintenance plan period.
More specifically, the maintenance work for the energy consuming equipment 4 is performed if the equipment efficiency of the energy consuming equipment 4 is maintained at the minimum required value H (FIG. 10) of the equipment efficiency required for the energy consuming equipment 4 in the building 2. Good.
Therefore, the automatic change unit 65 is a maintenance schedule that can change the predicted equipment efficiency of the energy consuming equipment 4 in the remaining period at the minimum required value H or more, and that has a maintenance schedule that reduces the total cost of maintenance work. This is done by changing the scheduled maintenance work schedule, canceling maintenance work, and adding maintenance work.
From the maintenance schedule thus obtained, the user can easily know the maintenance schedule that can reduce the cost required for the maintenance work.
The maintenance schedule may be reviewed at any time, but it is preferably effective when the equipment efficiency, energy unit price, or management environment changes.

FIG. 10 is an explanatory diagram of the maintenance schedule change.
In the figure, a graph K1 is a predicted device efficiency value of the energy consuming equipment 4 when it is assumed that maintenance work is performed according to the initial maintenance schedule A01. In the figure, the minimum required value H of the device efficiency is obtained from various document data (FIG. 6) generated in the life cycle process such as the device efficiency initial data A1 and the initial maintenance plan A0, or from the user input unit 34. To be acquired.
As shown in the figure, in the graph K1, even if the maintenance work scheduled at the implementation time J2 is canceled, the predicted device efficiency value may not fall below the minimum required value H as shown in the graph K2.

As described above, the predicted device efficiency value is easily obtained using the transition curve f of the device efficiency corresponding to the content of the maintenance work and the recovery amount g, so that the predicted device efficiency value is the minimum required value H during the remaining period. It is possible to specify a maintenance schedule for which maintenance work is scheduled so as not to fall below an appropriate program algorithm such as an optimization method or a brute force method.
Therefore, the automatic changing unit 65 identifies such a maintenance schedule by using an appropriate program algorithm, and obtains a maintenance cost with a small total value required for maintenance work from each of these maintenance schedules. The cost required for each maintenance work is specified based on the information included in the initial maintenance cost A02 described above.

In FIG. 5, the maintenance cost recalculation unit 61 calculates the maintenance cost required for the initial maintenance schedule A01 after being changed by the user input changing unit 64 or the automatic changing unit 65.
That is, the maintenance cost recalculation unit 61 causes the energy consumption cost calculation unit 40 to obtain a predicted device efficiency value for the remaining period in accordance with the original maintenance schedule A01 after the change, and based on this predicted device efficiency value, the energy consumption cost Get the predicted value.
Next, the maintenance cost recalculation unit 61 estimates the maintenance work cost for the initial maintenance schedule A01 after being changed by the user input changing unit 64 or the automatic changing unit 65. Then, the maintenance cost recalculation unit 61 estimates the maintenance cost by adding the predicted energy consumption cost and the maintenance work cost.

The single year maintenance cost calculation unit 62 assigns maintenance costs for the remaining period of the maintenance plan period for each year, and calculates maintenance costs for each year. For the start period of each single year, the first day of the year or the first day of the calendar New Year is used.
When calculation conditions related to increase / decrease in maintenance costs for each single year are input from the user input unit 34, the single-year maintenance cost calculation unit 62 calculates maintenance costs for each single year that meet the calculation conditions. . Specific examples of the calculation condition include a per capita rate and a budget designation for a designated year.
The per capita rate is a uniform value of the maintenance cost for each single year, and is a value obtained by dividing the maintenance cost in the remaining period by the number of years in the remaining period. In the budget designation, the budget for a single year maintenance cost for the year designated by the user in the remaining period is designated by the user. In this budget designation, the budget for the year specified by the user is allocated to the maintenance cost of the single year, and the remaining maintenance cost is allocated evenly to the maintenance costs of other single years, for example.
As the calculation conditions, in addition to these, an increase / decrease condition for increasing or decreasing the maintenance cost of each single year at a user-specified rate each time a year is passed may be used.

When calculating the maintenance cost for each year according to the calculation conditions designated by the user, the single year maintenance cost calculation unit 62 generates a maintenance schedule that matches the maintenance cost for each year that meets the calculation conditions. It is obtained by 60 automatic changing sections 65.
Thereby, the user can obtain | require easily the maintenance schedule according to the budget plan.

  The maintenance plan simulation unit 44 outputs these maintenance costs (energy consumption cost predicted value and maintenance work cost) and annual maintenance costs to the display unit 35. The display of the display unit 35 allows the user to easily examine how the maintenance cost changes when the initial maintenance schedule A01 is changed. Further, the maintenance plan simulation unit 44 displays the energy consumption cost reduction amount based on the predicted energy consumption cost value and the cost-effectiveness index value on the display unit 35 so that the user can evaluate the energy consumption cost reduction amount with respect to the maintenance cost. To.

FIG. 11 is an explanatory diagram showing the flow of maintenance plan work using the maintenance plan support system 12.
Initial data for the building 2 to be managed is first set in the maintenance plan support system 12 (step S1).
This initial data includes at least the above-mentioned initial maintenance plan A0 (initial maintenance schedule A01, initial maintenance cost A02), the estimated energy demand over the maintenance plan period for each energy consuming equipment 4, and the estimated energy unit price. . As described above, in the maintenance plan support system 12, the expected energy demand and the energy unit price are included in the initial maintenance plan A0 in advance. The above-described device efficiency initial data A1 is also set as initial data. These data are input from the inter-system data linkage unit 32 and the user input unit 34 and stored in the database 36.

After setting the initial data, the maintenance plan support system 12 acquires documents and electronic data related to the operation process of the life cycle of the building 2 through the inter-system data linkage unit 32 at a predetermined frequency, and the data related to the operation process. Are stored in the database 36 (step S2). The predetermined frequency is a frequency at which at least a transition curve f of equipment efficiency for each maintenance operation and a recovery amount g can be calculated, and sufficient data is stored to execute a simulation by the maintenance plan simulation unit 44. is there.
Examples of these documents and electronic data include BAS 8 and maintenance / inspection management and energy management documents and electronic data in the BAS 8 and the energy management system 10, as shown in FIG. Further, the maintenance / inspection data, device management ledger data, energy consumption data, energy cost data, and device efficiency data described with reference to FIG. 6 are generated based on the document and electronic data.
In addition, information on repair history, device disposal history, energy consumption history, energy consumption cost history, energy unit price history, and device efficiency history is stored in the database 36 in these data.
The data storage related to the operation process of the building 2 in step S2 is continued while the life cycle of the building 2 belongs to the operation process.

Thereafter, maintenance plan review work such as review of the initial maintenance plan A0 is performed by the user using the maintenance plan support system 12 (step S3).
For example, when reviewing the initial maintenance cost A02, the user causes the maintenance plan support system 12 to calculate a maintenance cost reflecting the actual equipment efficiency of the energy consuming equipment 4 in the building 2.

Specifically, the user inputs a maintenance cost calculation instruction reflecting the device efficiency from the user input unit 34. In response to this instruction, the energy consumption cost calculation unit 40 of the maintenance planning unit 38, for each maintenance work already performed by the time of the input of the instruction or the date and time designated by the user, A recovery amount g is obtained, and based on this, an energy consumption cost prediction value is obtained and output to the maintenance cost changing unit 41 and the cost-effectiveness output unit 42.
Next, the maintenance cost changing unit 41 changes the initial maintenance cost A02 based on the energy consumption cost predicted value, and the cost-effectiveness output unit 42 obtains a cost-effectiveness index value based on the energy consumption cost predicted value. Then, the maintenance plan unit 38 outputs the changed initial maintenance cost A02 and the cost-effectiveness index value to the display unit 35 and presents them to the user.
Thereby, the maintenance cost more accurate than the initial maintenance cost A02 is estimated, and the user can consider the change of the initial maintenance schedule A01 with reference to the maintenance cost.
Further, the user can evaluate the cost effectiveness of the maintenance work based on the cost effectiveness index value.
Such maintenance cost calculation can also be performed every time maintenance work that is expected to restore or restore equipment efficiency is performed.

  In addition, step S1 and step S2 in FIG. 11 should just be performed before execution of step S3. For example, when the maintenance plan support system 12 targets the management of a building 2 that has already entered the operation process before its introduction, initial data setting (step S1) and accumulation of documents relating to the operation process are performed. (Step S2) may be performed all at once by the time of the maintenance plan examination work in Step S3.

12 and 13 are diagrams illustrating examples of display screens for the maintenance cost calculation results.
As shown in FIG. 12, the maintenance cost is displayed on the display unit 35 as a bar graph for each single year (in the illustrated example, a single year), and the accumulated amount of the maintenance cost for each year is displayed as a line graph. . The bar graph of maintenance costs for each year is displayed as a so-called stacked bar graph in which the maintenance work costs for each energy consuming equipment 4 are added to the energy consumption costs, so that the user can easily grasp the breakdown of the maintenance costs. Yes.

Further, as shown in FIG. 13, the display unit 35 displays the breakdown of maintenance work cost (cost for each maintenance work) and the breakdown of energy consumption cost (cost for each energy type) for each energy consuming equipment 4. Is done. Further, the display unit 35 displays the predicted device efficiency value of each energy consuming equipment 4 for each single year so that these costs can be compared. In the example shown in the figure, the device efficiency prediction value for each single year is indicated by a value normalized by the initial value of the device efficiency (that is, the deterioration rate seen from the initial value of the device efficiency).
With this display, the user can review the maintenance work schedule by comparing and considering the maintenance work cost and energy consumption cost, the predicted value of the equipment efficiency for each single year, and the transition of the predicted value of the equipment efficiency. it can.

Further, for example, the user can also use the above-described maintenance plan simulation function of the maintenance plan support system 12 for the study of changing the initial maintenance schedule A01.
That is, the user inputs from the user input unit 34 changes such as the time and content of maintenance work scheduled in the initial maintenance schedule A01, or maintenance costs for each year.
The maintenance plan simulation unit 44 of the maintenance plan unit 38 obtains the maintenance cost of the original maintenance schedule A01 after the change based on the change and displays it on the display unit 35. Thereby, the maintenance cost according to the user's change with respect to the initial maintenance schedule A01 and the device efficiency prediction value are displayed as in the display examples of FIGS. 12 and 13, for example.

As described above, according to the present embodiment, the following effects can be obtained.
That is, in the maintenance plan support system 12 of this embodiment, the subsequent energy consumption cost is calculated | required using the apparatus efficiency calculated based on the measurement data which concern on the energy consumption of the energy consumption equipment 4 in the building 2. FIG.
Therefore, the predicted value of the energy consumption cost in the remaining period of the maintenance plan period becomes accurate, and the accuracy of the maintenance cost is improved.

Further, in the maintenance plan support system 12, the expected device efficiency in the remaining period of the maintenance plan period is obtained based on the transition of the device efficiency so far.
Therefore, the equipment efficiency in the remaining period of the maintenance plan period is predicted more accurately.

Further, the maintenance plan support system 12 displays the amount of energy consumption cost reduction (energy consumption cost reduction amount) expected to be reduced by the maintenance work and the maintenance work cost actual value on the display unit 35 so that they can be compared. .
Therefore, the user can easily grasp the cost-effectiveness of the maintenance work by such display.

The maintenance plan support system 12 accepts a change in the initial maintenance schedule A01 and calculates a maintenance cost required for the changed initial maintenance schedule A01.
Therefore, the user can easily simulate the maintenance cost after changing the maintenance schedule, and can evaluate the optimum timing of maintenance work (repair, update, repair, inspection, etc.) based on the maintenance cost and the equipment efficiency. At this time, since the energy consumption cost of the maintenance cost is an accurate value as described above, the maintenance cost by simulation is also accurate.

Further, the maintenance plan support system 12 accumulates the change in the equipment efficiency caused by the execution of the maintenance work for the energy consuming equipment 4, and based on this accumulation, the scheduled time of the maintenance work scheduled in the initial maintenance schedule A01, or A configuration (automatic change unit 65) is provided that changes the scheduled number of times so that the device efficiency does not fall below the minimum required value H.
Therefore, the user can easily know the initial maintenance schedule A01 that can maintain the equipment efficiency of the energy consuming equipment 4 at least at the minimum required value H or more.

The maintenance plan support system 12 includes a configuration (single year maintenance cost calculation unit) that allocates maintenance costs in the remaining period of the maintenance plan period to each single year in accordance with calculation conditions specified by the user.
Therefore, the user can easily grasp the cost-effectiveness of the maintenance work by such display.

Further, the maintenance plan support system 12 acquires the equipment efficiency calculated by the energy management system 10 that manages the energy consumption of the energy consuming equipment 4.
Therefore, the maintenance plan support system 12 does not need to measure the energy consuming equipment 4 for obtaining various measurement data required for calculating the equipment efficiency, and the configuration is simplified, and the equipment efficiency is managed in real time. It can be acquired from the system 10. Further, the system including the energy management system 10 and the maintenance plan support system 12 can be said to be a life cycle energy management system including support for maintenance plans, that is, a system that is an extension of the conventional energy management system.

Further, the maintenance plan support system 12 cooperates with the BIM system 6 and the BAS 8 in addition to the energy management system 10, stores the data managed by these systems in the database 36, and manages them in a unified manner. In particular, the database 36 stores documents and electronic data created in each process of the life cycle of the building 2, thus realizing consistent information management from the design of the building 2 to construction, operation and disposal. Is done. Further, based on these data and the maintenance plan, the user can consider the cost in the life cycle of the building 2 in an integrated manner.
Note that data indicating the amount of carbon dioxide (CO ₂ ) generated in each step of the life cycle is stored in the database 36, so that the user can review the life cycle cost by integrating the amount of carbon dioxide generated. You may do it.

  The above-described embodiment is merely an example of one aspect of the present invention, and can be arbitrarily modified and applied within the scope of the gist of the present invention.

In the above-described embodiment, the BAS 8 collects the measurement data related to the energy consumption of the energy consuming equipment 4 of the building 2. However, the present invention is not limited to this. For example, the energy management system 10 or the maintenance plan support system 12 may perform the measurement data. Good.
Moreover, although the energy management system 10 is configured to calculate the device efficiency based on these measurement data, the maintenance plan support system 12 may calculate the device efficiency based on the measurement data. In this case, the device efficiency is calculated at an appropriate timing every time measurement data is accumulated in step S2 of FIG.

In the embodiment described above, the maintenance plan support system 12 predicts the equipment efficiency in the remaining period of the maintenance plan period, and obtains the energy consumption cost based on the prediction of the equipment efficiency.
However, the energy consumption cost in the remaining period of the maintenance plan period may be obtained based on the current value (latest calculated value) of the equipment efficiency.
More specifically, as described above, the energy consumption cost is determined by the energy demand, the energy unit price, and the equipment efficiency. Assuming that the energy demand and unit price for the remaining period are the same as when the initial maintenance plan was formulated, the expected energy consumption cost is the ratio of the initial value of equipment efficiency to the current value when the maintenance plan is formulated. Increase or decrease accordingly. This ratio also corresponds to a deterioration rate based on the initial equipment efficiency of the energy consuming equipment 4. As described above, the maintenance plan support system 12 can easily obtain the energy consumption cost by obtaining the ratio between the latest calculated value of the device efficiency first and the device efficiency initial value.

  In the embodiment described above, the maintenance plan support system 12 calculates the expected energy demand in the remaining period of the maintenance plan period based on the energy consumption measurement data in the building 2 (each of the energy consuming equipment 4). However, instead of the expected energy demand, the expected energy demand (FIG. 4) included in the initial maintenance plan A0 may be used.

  In the embodiment described above, the BAS 8 may include the maintenance plan support system 12. In this case, for example, the central monitoring device 16 of the BAS 8 is configured to include each part of the maintenance plan support system 12.

  FIG. 5 showing the functional configuration of the maintenance plan support system 12 is a schematic diagram showing the functional configuration of the maintenance plan support system 12 classified according to main processing contents in order to facilitate understanding of the present invention. is there. Therefore, the configuration of the maintenance plan support system 12 can be classified into more components depending on the processing contents. Moreover, it can also classify | categorize so that one component may perform more processes. Further, the processing of each component may be executed by one hardware or may be executed by a plurality of hardware. The processing of each component may be realized by one program or a plurality of programs.

1 Building Management System 2 Building 3 Building Equipment 4 Energy Consumption Equipment 6 BIM System 8 BAS
DESCRIPTION OF SYMBOLS 10 Energy management system 12 Maintenance plan support system 22 Energy management apparatus 24 Equipment efficiency calculation part (Equipment efficiency acquisition part)
25 EMS database 32 Inter-system data linkage department (maintenance plan acquisition department, equipment efficiency acquisition department, maintenance work cost acquisition department)
34 User input part (calculation condition input part)
36 Database 38 Maintenance Planning Department 40 Energy Consumption Cost Calculation Department 41 Maintenance Cost Change Department (Maintenance Cost Output Department)
42 Cost-effective output unit 44 Maintenance plan simulation unit 50 Equipment efficiency prediction unit 51 Cost prediction unit 60 Maintenance schedule change unit 61 Maintenance cost recalculation unit 62 Year maintenance cost calculation unit 64 User input change unit 65 Automatic change unit A0 Initial maintenance plan A01 Initial maintenance schedule A02 Initial maintenance cost A1 Initial equipment efficiency data f Equipment efficiency transition curve g Equipment efficiency recovery

Claims (8)

A maintenance plan acquisition unit for acquiring a maintenance schedule including a maintenance schedule including a maintenance period and a maintenance cost for a multi-year plan for a building provided with energy consumption facilities;
The device efficiency of the energy consuming facility calculated based on the measurement data related to the energy consumption of the energy consuming facility in the building is obtained, or the device efficiency of the energy consuming facility is determined based on the measured data related to the energy consumption. A device efficiency acquisition unit to calculate,
An energy consumption cost calculation unit for obtaining an energy consumption cost due to energy consumption of the energy consuming facility based on the device efficiency acquired or calculated by the device efficiency acquisition unit;
A maintenance cost output unit that outputs the maintenance cost based on the energy consumption cost determined by the energy consumption cost calculation unit;
A maintenance plan support system characterized by comprising: A device efficiency prediction unit for obtaining the expected device efficiency in the remaining period of the planned period based on the transition of the device efficiency,
The energy consumption cost calculation unit
The maintenance plan support system according to claim 1, wherein the energy consumption cost is obtained based on the expected equipment efficiency obtained by the equipment efficiency prediction unit. A maintenance work cost acquisition unit for acquiring a maintenance work cost actual value required for the maintenance work performed on the energy consuming equipment;
The amount of energy consumption cost that is expected to be reduced by the maintenance work is calculated based on the energy consumption cost obtained by the energy consumption cost calculation unit, and the maintenance work cost actual value and the cost for outputting the reduction amount are calculated. An anti-effect output unit;
The maintenance plan support system according to claim 1, further comprising: A maintenance schedule changing unit for changing the maintenance schedule;
A maintenance cost calculation unit for calculating a maintenance cost required for the maintenance schedule changed by the maintenance schedule change unit;
The maintenance plan support system according to claim 1, comprising: The maintenance schedule changing unit
Based on the change in the efficiency of the equipment caused by the execution of the maintenance work on the energy consuming equipment, the scheduled time or scheduled number of the maintenance work scheduled for the energy consuming equipment in the maintenance schedule is changed. The maintenance plan support system according to claim 4. A calculation condition input unit that accepts input of calculation conditions for maintenance costs for each year of the planned period,
The calculation condition includes a designated single year budget, or an increase / decrease condition of the maintenance cost per year,
The maintenance cost calculation unit
The maintenance plan support system according to any one of claims 1 to 5, wherein a maintenance cost in the remaining period of the plan period is allocated to each single year in accordance with the calculation condition. The device efficiency acquisition unit
The maintenance plan support system according to any one of claims 1 to 6, wherein device efficiency calculated by an energy management system that manages energy consumption of the energy consuming facility is acquired. A first step of obtaining a maintenance plan including a maintenance schedule including a maintenance period and a maintenance cost for a multi-year planning period of a building provided with energy consuming equipment;
The device efficiency of the energy consuming facility calculated based on the measurement data related to the energy consumption of the energy consuming facility in the building is obtained, or the device efficiency of the energy consuming facility is determined based on the measured data related to the energy consumption. A second step of calculating;
A third step of obtaining an energy consumption cost due to energy consumption of the energy consuming equipment based on the device efficiency obtained or calculated in the second step;
A fourth step of outputting the maintenance cost based on the energy consumption cost determined in the third step;
A maintenance plan support method characterized by comprising:

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