JP6056393B2 - Equipment management device, equipment management method, and program - Google Patents

Description

  The present invention relates to provision of information for managing equipment supplied with a fluid that is manufactured using energy.

  Conventionally, various techniques have been disclosed for reducing power consumption in systems such as factories. For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2001-034323) discloses a machine tool that measures its own power consumption and transmits it to the outside. Patent Document 2 (Japanese Patent Laid-Open No. 2007-148726) discloses an apparatus that analyzes energy consumption including transition of utility load and transition of energy consumption for each process in a factory.

  In addition, some of the above-described systems use a fluid produced by consuming energy, such as a system for supplying compressed air to each device from a compressed air delivery compressor via a pipe. For such a system, various techniques for suppressing energy consumption due to driving of the compressor are disclosed. For example, Patent Document 3 (Japanese Patent Laid-Open No. 2004-176683), Patent Document 4 (Japanese Patent Laid-Open No. 2007-291870), Patent Document 5 (Japanese Patent Laid-Open No. 2011-226586), and Patent Document 6 (Japanese Patent Laid-Open No. 2012-2012). No. 031789) discloses a technique for suppressing the power consumption of the compressor.

JP 2001-034323 A JP 2007-148726 A JP 2004-176683 A JP 2007-291870 A JP2011-226586A JP 2012-031789 A

  In the conventional system as described above, reduction of power consumption of the machine itself, such as a machine tool and a compressor, has been studied. However, each study seems to be limited to a general reduction in power consumption, and in order to further reduce energy consumption, it is considered that an individual specific approach for each system is necessary.

  Generally, complicated analysis is required to reduce energy consumption in a system by reducing the consumption of fluid such as compressed air. More specifically, in order to reduce the energy consumption, a signal of an operation sequence of the facility is extracted from a device that controls the facility (manufacturing device or the like) that uses the fluid, and the extracted signal is It is necessary to analyze it together with information on fluid pressure and flow rate.

  The present invention has been conceived in view of such a situation, and an object thereof is to reduce energy consumption in accordance with the situation of each system in a system using a fluid produced by consuming energy. Is to provide information for.

  When a certain situation is followed, the equipment management apparatus which produces | generates the information regarding the equipment which receives supply of the fluid via a supply line from the supply source of the fluid is provided. The facility management apparatus divides the predetermined period into an operating state or a non-operating state of the facility based on an acquisition unit that acquires the flow rate of the fluid in the supply line and a plurality of time-series flow rates in the predetermined period. Information generating means for generating information for display and display means for displaying information relating to the flow rate in the non-operating state.

  Preferably, the information generation means is an index deriving means for deriving an index of flow stability based on a plurality of time-series flow rates, and an operation for separating the operating state and the non-operating state of the facility based on the index. Threshold generation means for generating a threshold value and extraction means for extracting a non-operating state from a predetermined period based on the threshold value.

  Preferably, the acquisition unit acquires the amount of power supplied to the facility, and the information generation unit extracts a standby state for the facility from the operating state based on the amount of power.

  Preferably, the display means displays information related to a total sum of the non-operating flow rates in a predetermined period.

  Preferably, the display unit displays information related to a ratio between a total sum of flow rates in a non-operating state and a sum total of periods other than the non-operating state in a predetermined period.

  Preferably, the acquisition unit acquires the flow rate of the fluid in each of the two or more supply lines, and the information generation unit separates the operating state and the non-operating state of the facility supplied from each of the two or more supply lines. The display means displays information on at least one of the operating state and the non-operating state for each of the two or more supply lines.

  Preferably, the display unit displays information on at least one of the operating state and the non-operating state for each of the two or more supply lines in accordance with a rank based on the flow rate of the non-operating state.

  According to another aspect, a facility management method is provided that is executed by a computer of an apparatus that generates information about a facility that receives a supply of fluid from a supply source of fluid via a supply line. The facility management method divides the predetermined period into an operating state and a non-operating state of the facility based on the step of acquiring the flow rate of the fluid in the supply line and a plurality of time-series flow rates in the predetermined period. Generating information for displaying, and displaying information related to the non-operating flow rate.

  According to still another aspect, a computer-executable program for an apparatus that generates information about a facility that receives a fluid supply from a fluid supply source via a supply line is provided. The program divides the predetermined period into an operating state and a non-operating state of the equipment based on the step of acquiring the flow rate of the fluid in the supply line in the computer and a plurality of time-series flow rates in the predetermined period. Generating information for displaying the information, and displaying the information regarding the non-operating flow rate.

  According to an aspect, the flow rate of the fluid in the supply line is acquired, and the facility receives the supply of fluid through the supply line during the predetermined period based on the plurality of time-series flow rates in the predetermined period. It is divided into the operating state and the non-operating state. And the information regarding the said flow volume about the non-operating state of the said equipment is displayed.

  Thereby, the non-operating state of the equipment is determined based on the amount of fluid supplied to the equipment. And the information regarding the quantity of the fluid supplied to the installation in the said non-operating state is provided. Further, the amount of energy such as electric power corresponding to the fluid is displayed. Further, according to such a method, it is possible to analyze the signal based on the flow rate of the fluid without taking out the signal of the operation sequence of the facility from the device that controls the facility using the fluid. Operation / non-operation can be determined.

It is a figure which shows the outline | summary of a structure of the system used as the control object of a system control apparatus. It is a figure for demonstrating the outline | summary of the process by a controller. It is a figure which shows the hardware constitutions of a controller typically. It is a figure which shows the function structure of a controller typically. It is a flowchart of an example of the process for calculating threshold value TH. It is a figure for _{demonstrating} set Xi. It is a figure which shows an example of the specific time period of the measurement result of flow volume. It is a figure for demonstrating the characteristic of the threshold value TH set by the process of FIG. It is a figure for demonstrating an example of the classification | category to three types of states of an object period. It is a figure which shows an example of the screen which displays the information based on the classification | category of a state. It is a figure which shows an example of the screen which displays the information based on the classification | category of a state.

  Hereinafter, an embodiment of a device for controlling a system to which compressed air is supplied as an example of a fluid will be described with reference to the drawings. Note that the same constituent elements are denoted by the same reference numerals in the respective drawings, and detailed description thereof will not be repeated.

  In this specification, compressed air is adopted as an example of the fluid supplied to the system. Other examples of fluids that can be supplied to the system include liquids such as cooling water and steam.

[System Overview]
FIG. 1 is a diagram illustrating an outline of a configuration of a system to be controlled by a system control apparatus. The outline of the configuration of the system will be described with reference to FIG.

  The system of FIG. 1 includes a supply facility 1000 and a consumption facility 2000. The supply facility 1000 supplies compressed air, which is an example of a fluid, to the consumption facility 2000. The consumption facility 2000 includes facilities 801 to 803 that receive a supply of compressed air and perform processing such as product manufacture and polishing. Supply facility 1000 includes compressors 601 to 604 that generate compressed air in facilities 801 to 803.

  In the supply facility 1000, the compressed air generated in the compressors 601 to 604 is stored in the tank 500 via the pipe 900. The compressed air stored in the tank 500 is sent to the consumption facility 2000 via the trunk line 910 (supply line). The main line 910 is provided with a pressure sensor 701 for measuring the pressure in the main line 910. In the supply facility 1000, the control panel 400 drives the compressors 601 to 604 in order to maintain the pressure in the main line 910 at the control target of the main line 910 based on the measurement result of the pressure sensor 701. For example, the control panel 400 uses the measurement result of the pressure sensor 701 to drive the compressors 601 to 604 by PID (Proportinal Integral Differential) control.

  The control panel 400 may determine the number of compressors to be driven among the compressors 601 to 604 based on the measurement result of the pressure sensor 701. More specifically, the control panel 400 increases the number of compressors to be driven among the compressors 601 to 604 when the pressure in the main line 910 decreases, and increases the number of compressors to be driven when the pressure in the main line 910 increases. Reduce.

  The consumption facility 2000 is provided with branch pipes 911 to 913 for sending compressed air from the main line 910 to the facilities 801 to 803. The trunk line 910 is provided, for example, in a facility duct. The branch pipes 911 to 913 are configured as pipes drawn from the duct to equipment in the facility. Generally, the diameters (about 10 mm) of the branch pipes 911 to 913 are configured to be smaller than the diameter (about 50 mm) of the main line 910.

  The main line 910 is further provided with a flow rate sensor 722 for measuring the flow rate (instantaneous flow rate) of compressed air in the main line 910 and a valve 721 for adjusting the flow rate of compressed air from the tank 500 to the main line 910. ing.

  The consumption facility 2000 is provided with a network controller 200 and a controller 100. The network controller 200 receives the measurement results from the flow sensor 722, receives the measurement results of the electric energy supplied to each of the facilities 801 to 803, and transmits these measurement results to the controller 100. Based on the measurement result received from the network controller 200, the controller 100 classifies the operating status (operating state / non-operating state) of the consumption facility 2000 in the target period specified for the consumption facility 2000. Moreover, the controller 100 performs various displays based on the result of the classification.

  The controller 100 may display information on a display device included in the controller 100 or may be performed on another device. The controller 100 can be realized by various information processing apparatuses such as a personal computer, a tablet terminal, and a smart phone (high function mobile phone).

  In FIG. 1, only one main line 910 is shown as a line to which compressed air is supplied from the tank 500. On the other hand, the supply facility 1000 can also supply compressed air to the plurality of consumption facilities 2000. In this case, a trunk line is provided for each consumption facility, and the measurement result of the flow rate of the compressed air in each trunk line is transmitted to the controller 100. In addition, for each consumption facility, a measurement result of the amount of power supplied to the facility included in the consumption facility is transmitted to the controller 100. The controller 100 specifies the non-operating state in the target period for each consumption facility based on the measurement result of the flow rate of each consumption facility. In this case, the controller 100 can compare the behavior of the non-operating state for each consumption facility and display the result of the comparison.

  In the present specification, the flow rate of the compressed air in the trunk line 910 may be simply indicated as “flow rate”.

[Overview of processing by the controller]
FIG. 2 is a diagram for explaining an overview of processing by the controller 100. With reference to FIG. 2, the determination of the operating state of the consuming equipment 2000 based on the aspect of the change in the flow rate of the compressed air in the main line 910 will be described.

  In FIG. 2, the measurement result of the flow rate of the compressed air in the trunk line 910 from time T1 to time T4 is shown by the line L1. The operating state of the consumption facility 2000 means whether the facilities 801 to 803 are in “operating state” or “non-operating state”. The operating state refers to a period during which at least one of the facilities 801 to 803 is operating. The operation means that each of the facilities 801 to 803 receives an electric power supply and performs an operation such as product processing. The non-operating state refers to a period during which none of the facilities 801 to 803 are operating.

  Based on the threshold value TH, the controller 100 classifies the period from time t1 to time t4 into an operating state and a non-operating state of the consuming equipment 2000. More specifically, a period in which the measurement result is greater than or equal to the threshold value TH is identified as an operating state, and a period in which the measurement result is less than the threshold value TH is identified as a non-operating state.

  In the example of FIG. 2, the measurement result is less than the threshold during the period from time t1 to time t2. Thereby, the controller 100 specifies the said period as the non-operating state of the consumption equipment 2000. FIG. Further, in the period from time t2 to time t3, the measurement result is equal to or greater than the threshold value. Thereby, the controller 100 specifies the period from the time t2 to the time t3 as the operating state of the consumption equipment 2000. Moreover, in the period from time t3 to time t4, the measurement result is less than the threshold value. Thereby, the controller 100 specifies the period from the time t3 to the time t4 as the non-operating state of the consumption equipment 2000.

  As described above, the controller 100 identifies the non-operating state of the consumption facility 2000 based on the change in the flow rate of the compressed air in the main line 910 within a predetermined period. And the controller 100 displays various information about the said non-operating state. Examples of the displayed information include the amount of compressed air supplied to the consumption facility 2000 when the consumption facility 2000 is not operating. Another example is the ratio of the amount of compressed air supplied in the non-operating state to the sum of the supply amounts in the operating state and the non-operating state. Details of the displayed contents will be described later.

[Hardware Configuration of Controller 100]
FIG. 3 is a diagram schematically illustrating a hardware configuration of the controller 100. The hardware configuration of the controller 100 will be described with reference to FIG.

  The controller 100 includes a CPU (Central Processing Unit) 10 that is an arithmetic device for controlling the entire controller 100, a ROM (Read Only Memory) 11 for storing a program executed by the CPU 10, and a program executed by the CPU 10. Random Access Memory (RAM) 12 for functioning as a work area for execution, a communication device 18 realized by a modem or the like for communicating with an external device, and a display realized by a device such as a liquid crystal display device The device 14, the operation unit 15 for receiving operation input to the controller 100, the recording medium 16 for storing a program executed by the CPU 10, and the storage medium M removable from the controller 100 are accessed. Media links for reading and writing files from there And a controller 17.

  The operation unit 15 is realized by an input device such as a keyboard or a mouse. The display device 14 and the operation unit 15 may be integrally realized as a touch panel. The communication device 18 receives the measurement result of the flow sensor 722 and the amount of power supplied to the facilities 801 to 803 from the network controller 200, and receives various application programs from the server device S via the network. Further, the communication device 18 may transmit the calculation result in the controller 100 to an external device.

  In the present embodiment, for example, when the CPU 10 executes an appropriate program, at least a part of the functions of the controller 100 described in the present specification is realized. At least a part of the program executed by the CPU 10 may be stored in the storage medium M. As the storage medium M, CD-ROM (Compact Disc-Read Only Memory), DVD-ROM (Digital Versatile Disk-Read Only Memory), USB (Universal Serial Bus) memory, memory card, FD (Flexible Disk), hard disk, Magnetic tape, cassette tape, MO (Magnetic Optical Disc), MD (Mini Disc), IC (Integrated Circuit) card (excluding memory cards), optical card, mask ROM, EPROM, EEPROM (Electronically Erasable Programmable Read-Only Memory) For example, a medium for storing the program in a nonvolatile manner.

  The program executed by the CPU 10 may be downloaded from an external server device S via a network and installed in the recording medium 16.

[Functional configuration of controller 100]
FIG. 4 is a diagram schematically illustrating a functional configuration of the controller 100. The functional configuration of the controller 100 will be described with reference to FIG.

  The controller 100 includes a data storage unit 101, an index derivation unit 102, a threshold value generation unit 103, a non-operating state extraction unit 104, a comparison information derivation unit 105, and a display information generation unit 106. The data storage unit 101 is realized by the RAM 12 and / or the recording medium 16, for example. The index deriving unit 102, the threshold value generating unit 103, the non-operating state extracting unit 104, the comparison information deriving unit 105, and the display information generating unit 106 are realized by the CPU 10 executing an appropriate program, for example. It may be realized by hardware resources independent of the CPU 10, such as a dedicated circuit.

  The data accumulation unit 101 receives and accumulates the measurement result of the flow sensor 722 and the amount of power supplied to the devices 801 to 803.

The index deriving unit 102 derives a flow rate stability index based on a plurality of time-series flow rates. More specifically, the index deriving unit 102 determines a specific period longer than the predetermined period (for example, the specific time is a predetermined period based on the detection output of the compressed air flow rate in the trunk line 910 for each predetermined period. n times, where n is the number of sample data included in a set X _{i to be} described later).

  Based on the index calculated by the index deriving unit 102, the threshold generation unit 103 divides the target period into an operating state and a non-operating state of the consumption facility 2000 based on the flow rate of the compressed air in the main line 910. Generate (calculate) a threshold value. A method for calculating the threshold will be described later. The target period is, for example, “one day” and may be specified based on information input to the operation unit 15 or may be registered in the controller 100 in advance.

  The non-operating state extraction unit 104 extracts the non-operating state in the target period based on the threshold value generated by the threshold value generating unit 103 and the flow rate measurement result in the target period.

  The comparison information deriving unit 105 divides the target period into an operating state and a non-operating state based on the non-operating state (corresponding to) extracted by the non-operating state extracting unit 104, and displays the flow rate measurement result of each period. Various information is generated by using the information. In addition, the comparison information deriving unit 105 generates information for comparing the behavior of the non-operating state for a plurality of lines. As described above, when the supply facility 1000 supplies compressed air to a plurality of consumption facilities, the non-operation state extraction unit 104 extracts the non-operation state from the target period for each consumption facility. The comparison information deriving unit 105 acquires the behavior of the non-operating state, such as the ratio of the amount of compressed air supplied to the non-operating state to the total supply amount, for each consumption facility, and generates information for comparing the behavior. .

  The display information generation unit 106 generates a screen for displaying the measurement results stored in the data storage unit 101 and the information generated by the comparison information deriving unit 105 on the display device 14 and transmits the screen to the display device 14.

[Control flow]
As described above, the controller 100 classifies the target period into the operating state and the non-operating state based on the flow rate for each supply line in the target period and the threshold value. More specifically, when receiving an instruction to display management information of the consumption facility 2000, the controller 100 acquires information for specifying the target period and calculates a threshold value TH for the consumption facility 2000. Then, as described with reference to FIG. 2, the controller 100 classifies the target period into an operating state and a non-operating state using the measurement result of the target period and the threshold value TH.

  FIG. 5 is a flowchart of an example of a process for calculating the threshold value TH. With reference to FIG. 5, an example of a method for calculating the threshold value TH will be described.

In step S10, the controller 100 calculates the standard deviation σ _i from the flow rate measurement result set X _i and advances the process to step S20. In the process of FIG. 5, i is a variable. FIG. 6 is a diagram for explaining the set X _i . The configuration of the set X _i will be described with reference to FIG.

In FIG. 6, an example of the measurement result of the flow rate is indicated by a line L3. On the line L3, individual measurement results (sample points) are shown as a point x ₁ , a point x ₂ ,..., A point x _n and a point x _{n + 1} . In the system of FIG. 1, the controller 100 acquires the flow rate measurement result from the flow rate sensor 722 at regular intervals (the regular period is Tx described later, for example, “50 milliseconds”). In this specification, the set X _i is an i-th set of n measurement results (measurement results x1 to xn in FIG. 6) acquired in succession. A set X _{i + 1} is a set of _i- th consecutively acquired n measurement results (measurement results x1 to xn in FIG. 6). Set _{X i + 1,} the measurement results are measurement results _{x n + 1} after a certain period _{x n} added to the set _{X i,} by deleting the oldest measurement result _{x 1} in the set _{X i,} is obtained. The controller 100 can calculate various indices such as the maximum value Max _m , the minimum value Min _m , the average value μm, and the standard deviation σ _m for each set X _m .

Returning to FIG. 5, in step S20, the controller 100 determines whether the standard deviation σ _{i of} X _i calculated in step S10 is larger than a value that is three times the predetermined constant σ ₁ (σ _i > 3σ ₁ ). Judge whether or not. If controller 100 determines that “σ _i > 3σ ₁ ” is established, the controller 100 proceeds to step S30. If not, controller 100 proceeds to step S40.

The constant σ ₁ corresponds to a standard deviation when the consuming equipment is not in operation. The constant σ ₁ may be input from the user via the operation unit 15, or may be obtained in advance based on the flow rate measurement result when the consuming equipment is reliably in the non-operating state and stored in the recording medium 16. May be. The constant σ ₁ may be the standard deviation σ ₁ obtained from the first set (set X ₁ ) in the measurement result at the start of the processing shown in FIG.

In step S30, the controller 100, the maximum value of the set _{X i (Max (X i)} ) determines whether match the maximum value of the set _{X i + 1 (Max (X} i + 1)). The determination at this time may be determined to be coincident if the difference between the two maximum values is within a specific range. If controller 100 determines that the two maximum values match, it proceeds to step S50, and if it does not match, it proceeds to step S40.

  In step S40, the controller 100 updates the variable i by 1 and returns the process to step S10.

  The determination in step S20 corresponds to a determination as to whether or not the rate of increase in the flow rate has become sufficiently large to be determined that the operating state has been switched from the non-operating state. When it is determined that the rate of increase in the flow rate has become sufficiently large, the process proceeds to step S30.

The determination in step S30 corresponds to the determination of whether or not the increase in the flow rate has reached a peak. FIG. 7 is a diagram illustrating an example of a specific time period of the flow rate measurement result. In FIG. 7, the measurement result is indicated by a function y. In the range shown in FIG. 7, the value of the function y continues to rise up to x _j, it plateaued in the x _i, are changed to x i _{+ 1.} In step S30, it is determined whether or not the maximum value of the set X _i in the change in flow rate indicates a peak value as indicated by x _i in FIG. Then, if it is determined that the flow rate has reached a peak, the process proceeds to step S50.

  In step S50, the controller 100 calculates an operation state start time (operation start time) τ and advances the process to step S60. The operation start time τ is then calculated according to equation (1).

τ = Tx × i (1)
In Expression (1), Tx is a period in which the measurement result is acquired, that is, the above-described “certain period”. The variable i is a number that identifies the number of sets from the beginning of the target period that the set X _{i that} has been processed in steps S10 to S30. That is, τ is information for specifying the time when the first measurement result of the set X _i starting from the start time of the operating state is acquired.

  In step S60, the controller 100 determines whether or not the current time t (processing target time) is located between τ and τ + T. T is a value that is preset and registered in the recording medium 16 as the length of time of the operating state of the consumption facility. Thereby, the period from τ to τ + T corresponds to the operating state of the consuming equipment. That is, in step S60, it is determined whether or not the current time t corresponds to the operating state. If the controller 100 determines that the current time t is between τ and τ + T (τ ≦ t ≦ τ + T), the controller 100 proceeds to step S70, and the current time t is outside the period from τ to τ + T (that is, If the current time t exceeds τ + T), the process proceeds to step S90.

In step S70, the controller 100 adds sample data x _j (operation result of the j-th flow rate) during operation to the set Y _j and advances the process to step S80.

  In step S80, the controller 100 adds and updates the current time t by Tx, and returns the process to step S60.

Through the processing in steps S60 to S80, the measurement data in the operating state of the consumption facility is stored in the recording medium 16 of the controller 100 as the set _Yj . If it is determined in step S60 that the operating state has ended, the process proceeds to step S90.

In step S90, the controller 100 calculates the standard deviation σ _j and the average value μ _j from the set Y _j and advances the process to step S100. The standard deviation σ _j is a standard deviation of the measurement result x _j included in the set Y _j . The average value μ _j is an average value of the measurement results x _j included in the set Y _j .

  In step S100, the controller 100 calculates the threshold value TH according to the following equation (2), and ends the process.

Threshold TH = μ _j −3σ _j (2)
As described above, the flow rate stability index (σ _j ) is derived based on a plurality of time-series flow rates by the process described with reference to FIG. Then, the threshold value TH is calculated based on the index.

  Equation (2) is based on the assumption that the non-operating flow rate and the working flow rate follow normal distributions having different mean values and standard deviations (distributions), respectively. FIG. 8 is a diagram for explaining the characteristic of the threshold value TH set by the process of FIG.

  In FIG. 8, an example of the change in flow rate is indicated by a line L2. In the graph of FIG. 8, the horizontal axis represents the flow rate, and the vertical axis represents the number of times (frequency) that the value of each flow rate was obtained as a measurement result.

  The line L2 in FIG. 8 includes a sharp peak P1 on the side with a low flow rate and a wide peak P2 on the side with a high flow rate. Based on the above assumption, the normal distribution including the peak P1 corresponds to the non-operating state, and the normal distribution including the peak P2 corresponds to the operating state.

The reason why the peak on the side with a lower flow rate corresponds to the non-operating state is as follows.
In the non-operating state of the consuming equipment, the consumption of compressed air in the consuming equipment is considered to be mainly caused by leakage of compressed air in the consuming equipment. On the other hand, in the operating state of the consumption facility, the consumption of compressed air in the consumption facility is considered to be caused by the leakage and the operation of the facility. Therefore, when compressed air is supplied to the consuming equipment while maintaining a constant pressure on the main line 910, the average value of the flow rate measurement result in the non-operating state is the flow rate in the operating state as shown in FIG. It is expected to be lower than the average value of the measurement results.

The sharper peak corresponds to the non-operating state for the following reason.
The cause of consumption of compressed air in a consumption facility is not limited to “leakage” in the non-operational state, but in the operation state, in addition to the “leakage”, various causes in each facility included in the consumption facility It is expected to include conditions (air output at multiple levels of intensity, etc.). From this, it is predicted that the distribution of the flow rate measurement result in the non-operating state is narrower than the flow rate distribution in the operating state, as shown in FIG.

In the present embodiment, the threshold value TH is set so as to be positioned between the distribution of the measurement results in the non-operating state and the distribution of the measurement results in the active state as shown in FIG. Accordingly, the threshold value TH is calculated. That is, the threshold value TH is calculated based on the average value (μ _j ) and standard deviation (σ _j ) of the measurement results for the period assumed to be the operating state of the consuming equipment.

[Categorization into operating status and non-operating status]
As described with reference to FIG. 2, the controller 100 divides the target period into an operating state and a non-operating state based on the flow rate measurement result of the target period for the consumption facility. More specifically, the controller 100 obtains the threshold value TH as described with reference to FIG. 5, for example, and uses the threshold value TH. Specify a period below the non-operating state. In addition, the controller 100 specifies a period other than the non-operating state in the target period as the operating state.

  In addition, the controller 100 may specify a period in which the flow rate measurement result is equal to or greater than the threshold value TH as an operating state and may specify a period other than the target period as a non-operating state. Alternatively, the controller 100 identifies a period in which the flow rate measurement result is greater than or equal to the threshold value TH as an operating state and identifies a period in which the flow rate measurement result is less than the threshold value TH as a non-operating state. Also good.

  More specifically, the controller 100 continuously accumulates the flow rate measurement results. Then, for example, when an instruction for classification for the target period is input via the operation unit 15 (or from another device), the controller 100 calculates the threshold TH for the target period and determines the state. Perform classification.

  The controller 100 can also classify the state for each of the plurality of consumption facilities. In this case, the controller 100 accumulates the flow rate measurement results for each consumption facility, and performs classification using the threshold value TH and the threshold value TH for each consumption facility.

[Variation of classification]
In the embodiment described above, the target period is classified into two types, that is, an operating state and a non-operating state of the consumption facility. The controller 100 can also classify the target period into three types including the standby state of the consumption equipment. FIG. 9 is a diagram for explaining an example of three types of classification of the target period. With reference to FIG. 9, the three types of classification will be described.

  In FIG. 9, line L4 shows the measurement result of the flow rate of the consumption equipment. A line L5 indicates the amount of power supply (power consumption) to the equipment included in the consumption equipment.

  As described mainly with reference to FIG. 2, the controller 100 divides the target period into an operating state and a non-operating state based on the flow rate measurement result and the threshold value TH. The controller 100 can further extract the standby state from the operating state based on the power consumption of the facility. As a modification, the controller 100 stores a threshold value E1 for power consumption. The threshold value E1 is a power consumption amount when at least one of the facilities included in the consumed facility is operating. And the controller 100 specifies the period when the power consumption of an installation is less than the threshold value E1 among operation states as a standby state of a consumption installation.

  In this modification, the controller 100 has three types of target periods: an operating state (a period that does not correspond to the standby state among the periods specified as the operating state by the threshold value TH), a standby state, and a non-operating state. It can be divided into periods corresponding to each of the states.

[Presentation of information]
The controller 100 can divide the target period into periods corresponding to two types of operating states and non-operating states, or three types of states of operating states, standby states, and non-operating states. Then, the controller 100 displays various information based on the classification result. 10 and 11 are diagrams illustrating an example of a screen on which the controller 100 displays information based on the classification. With reference to FIG. 10 and FIG. 11, an example of information displayed based on the classification when the target period is divided into periods corresponding to the three types of states will be described.

  The controller 100 can divide the target period into a period corresponding to each of two or more states including an operating state and a non-operating state for each of the plurality of consumption facilities that receive the supply of compressed air. The controller 100 displays various information such as a ratio of the amount of compressed air supplied in a non-operating state with respect to the total amount supplied during the target period, as information regarding such classification.

  In FIG. 10, information about two or more supply lines (consumption equipment) is displayed. In the screen 140 of FIG. 10, the display columns 141 to 146 display information on each consumption facility. The display columns 141 to 145 include numerical values for “room for reduction”, “amount”, and “occupation rate”.

  The “room for reduction” corresponds to the integral value of the flow rate during the period specified as the non-operating state, that is, the amount of compressed air consumed in each consuming equipment in the non-operating state.

  “Amount” is an amount corresponding to the amount indicated as “room for reduction”. In the controller 100, the cost for compressed air per unit volume is registered in advance. The controller 100 displays the product of the volume indicated by “room for reduction” and the cost of compressed air per unit volume as “amount” for each consumption facility.

  “Occupancy ratio” is the ratio of the integral value of the flow rate during the period specified as the non-operating state to the integral value of the total flow rate during the target period.

For example, the display column 141 displays information related to the supply line specified by the name “mounted C line”. In the display column 141, “room for reduction” is 215 m ³ (per day). In other words, it indicates that the “reduction room” when the target period is one day is 215 m ³ . The “amount” is 1,075 yen. This amount is obtained by calculating the product of 215 m ^{3 of} “room for reduction” and the cost per unit volume (yen / m ³ ). “Occupancy rate” is 60%. This display means that the integral value of the non-operating flow rate is 60% with respect to the integral value of the total flow rate of compressed air during the target period.

  The numbers on the right end of the display columns 141 to 146 are ranks assigned between two or more supply lines on which the controller 100 displays information. For example, the controller 100 can rank the two or more supply lines in descending order of the “occupancy”. Then, the controller 100 displays information about each supply line on the screen 140 in the order according to the rank.

  The controller 100 can also display more detailed information about each supply line. For example, when an operation is performed on the display column 141 in the screen 140, the display content on the display device 14 is switched to a screen that displays detailed information about the supply line corresponding to the display column 141. FIG. 11 is a diagram showing an example of a detailed information display screen for the supply line corresponding to the display field 141.

  The screen 150 in FIG. 11 displays a graph 151 that indicates a change in flow rate over time, a graph 152 that indicates the ratio of the operating status in the target period, a column 153 that displays information about the operating status, and information about the standby status. A column 154 and a column 155 for displaying information about the non-operating state are included. The graph 151 also shows the result of classification of the operating state / standby state / non-operating state in addition to the time change of the flow rate.

  In columns 153 to 155, for each of the operating state / standby state / non-operating state, the integrated value of the flow rate, the cost (amount) corresponding to the integrated value, and the ratio of each integrated value to the integrated value of the overall flow rate (Occupancy) is displayed. The cost of each period is acquired, for example, by calculating the product of the integrated value of the flow rate of each period and the cost per unit volume.

  The graph 151 shows the ratio of the integrated value of the flow rate during each of the operating state / standby state / non-operating state.

  The controller 100 calculates a threshold value TH suitable for each supply line for each of two or more supply lines, and classifies the target period into two or three types using the threshold value TH. Then, the controller 100 displays which time zone is specified as the non-operating state or the operating state (or the non-operating state, the operating state, or the standby state) for each supply line based on the classification result. Further, the controller 100 displays the amount of compressed air consumed in the non-operating state or the operating state (or the standby state). Furthermore, the controller 100 displays the cost corresponding to the amount of compressed air consumed in the non-operating state or the standby state.

  Moreover, the controller 100 displays the information which compared the said quantity and cost about each supply line. Thus, not only information related to the amount of fluid consumed in the non-operating state of each supply line, but also information on the result of comparison of information related to each consumption amount for each supply line, which has not been seen so far, is provided.

  In FIG. 11, the display screen when the target period is divided into three types of periods (states) is shown. However, the controller 100 also shows the case where the target period is divided into two types of periods (states). Similarly, the time zone specified as each period, the amount of compressed air consumed in each period, and the cost corresponding to the amount of each period can be displayed.

  Each embodiment and its modification disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims. In addition, each embodiment and its modification examples are intended to be implemented alone or in combination as appropriate.

  The system control apparatus described in the present embodiment can be applied to control of other fluids (for example, nitrogen gas, cooling water, hot water, etc.) in addition to control of the flow rate of compressed air and the like.

  10 CPU, 14 display device, 100 controller, 101 data storage unit, 102 index derivation unit, 103 threshold generation unit, 104 non-operating state extraction unit, 105 comparison information derivation unit, 106 display control unit, 200 network controller, 701 Pressure sensor, 722 flow sensor, 801-803 equipment, 910 trunk.

Claims (12)

A facility management device that generates information about a facility that receives fluid supply from a fluid supply source via a supply line,
Obtaining means for obtaining a flow rate of the fluid in the supply line;
Information generating means for generating information for dividing the predetermined period into an operating state or a non-operating state of the facility based on the plurality of flow rates in time series in a predetermined period;
Display means for displaying information on the flow rate in the non-operating state,
The information generating means
Index deriving means for deriving an index of the stability of the flow rate based on the plurality of flow rates in time series;
Based on the indicator, threshold generating means for generating a threshold for separating the operating state and the non-operating state of the facility;
An equipment management apparatus comprising: an extraction unit that extracts the non-operating state from the predetermined period based on the threshold value . A facility management device that generates information about a facility that receives fluid supply from a fluid supply source via a supply line,
Obtaining means for obtaining a flow rate of the fluid in the supply line;
Information generating means for generating information for dividing the predetermined period into an operating state or a non-operating state of the facility based on the plurality of flow rates in time series in a predetermined period;
Display means for displaying information on the flow rate in the non-operating state,
The display means displays information on said flow rate of the sum of non-operation state in the predetermined period, equipment management device. Information relating to the said flow of the sum of non-operation state in the predetermined period, the predetermined time period, the total sum of the flow rate of the non-working state, with information about the ratio of the sum of the period other than the non-operational there, facility management apparatus according to claim 2. A facility management device that generates information about a facility that receives fluid supply from a fluid supply source via a supply line,
Obtaining means for obtaining a flow rate of the fluid in the supply line;
Information generating means for generating information for dividing the predetermined period into an operating state or a non-operating state of the facility based on the plurality of flow rates in time series in a predetermined period;
Display means for displaying information on the flow rate in the non-operating state,
The acquisition means acquires the flow rate of the fluid in each of the two or more supply lines,
The information generating means generates information for dividing into an operating state and a non-operating state of equipment receiving supply from each of the two or more supply lines,
The display means for each of two or more of the supply lines, to display information about at least one of the operating state or the non-working state, facility management apparatus. The display means, the operating state or the information regarding at least one non-working state for each of two or more of the supply lines, and displays according to rank based on said flow rate of the non-working state, according to claim 4 Equipment management equipment. The acquisition means acquires the amount of power supplied to the facility,
It said information generating means, based on the amount of power, to extract the standby state for the equipment from the operation state, the equipment management apparatus according to any one of claims 1 to 5. A facility management method executed by a computer of an apparatus for generating information on a facility that receives a supply of fluid from a fluid supply source via a supply line,
Obtaining a flow rate of fluid in the supply line;
Generating information for dividing the predetermined period into an operating state and a non-operating state of the facility based on the plurality of time-series flow rates in a predetermined period;
Look including the step of displaying information relating to the flow rate of the non-operating state,
The step of generating information for dividing the operating state and the non-operating state of the equipment,
Deriving a stability indicator of the flow rate based on a plurality of the flow rates in time series;
Generating a threshold for separating the operating state and the non-operating state of the facility based on the indicator;
Extracting the non-operating state from the predetermined period based on the threshold value . A facility management method executed by a computer of an apparatus for generating information on a facility that receives a supply of fluid from a fluid supply source via a supply line,
Obtaining a flow rate of fluid in the supply line;
Generating information for dividing the predetermined period into an operating state and a non-operating state of the facility based on the plurality of time-series flow rates in a predetermined period;
Displaying information relating to the flow rate in the non-operating state,
The step of displaying the information is a facility management method of displaying information related to the sum of the flow rates in the non-operating state in the predetermined period. A facility management method executed by a computer of an apparatus for generating information on a facility that receives a supply of fluid from a fluid supply source via a supply line,
Obtaining a flow rate of fluid in the supply line;
Generating information for dividing the predetermined period into an operating state and a non-operating state of the facility based on the plurality of time-series flow rates in a predetermined period;
Displaying information relating to the flow rate in the non-operating state ,
The step of obtaining the flow rate obtains the flow rate of the fluid in each of the two or more supply lines,
The step of generating the information generates information for dividing into an operating state and a non-operating state of equipment that receives supply from each of the two or more supply lines,
The step of displaying the information is a facility management method for displaying information on at least one of the operating state and the non-operating state for each of the two or more supply lines. A program executable by a computer of an apparatus for generating information on a facility that receives a supply of fluid from a supply source of fluid via a supply line,
The program is stored in the computer.
Obtaining a flow rate of fluid in the supply line;
Generating information for dividing the predetermined period into an operating state and a non-operating state of the facility based on the plurality of time-series flow rates in a predetermined period;
Displaying information relating to the flow rate in the non-operating state ,
The step of generating information for dividing the operating state and the non-operating state of the equipment,
Deriving a stability indicator of the flow rate based on a plurality of the flow rates in time series;
Generating a threshold for separating the operating state and the non-operating state of the facility based on the indicator;
Extracting the non-operating state from the predetermined period based on the threshold value . A program executable by a computer of an apparatus for generating information on a facility that receives a supply of fluid from a supply source of fluid via a supply line,
The program is stored in the computer.
Obtaining a flow rate of fluid in the supply line;
Generating information for dividing the predetermined period into an operating state and a non-operating state of the facility based on the plurality of time-series flow rates in a predetermined period;
Displaying information relating to the flow rate in the non-operating state,
The step of displaying the information is a program for displaying information relating to the sum of the flow rates in the non-operating state in the predetermined period. A program executable by a computer of an apparatus for generating information on a facility that receives a supply of fluid from a supply source of fluid via a supply line,
The program is stored in the computer.
Obtaining a flow rate of fluid in the supply line;
Generating information for dividing the predetermined period into an operating state and a non-operating state of the facility based on the plurality of time-series flow rates in a predetermined period;
Displaying information relating to the flow rate in the non-operating state,
The step of obtaining the flow rate obtains the flow rate of the fluid in each of the two or more supply lines,
The step of generating the information generates information for dividing into an operating state and a non-operating state of equipment that receives supply from each of the two or more supply lines,
The step of displaying the information is a program for displaying information on at least one of the operating state and the non-operating state for each of the two or more supply lines.

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