Energy consumption deterioration detection device, energy saving operation deterioration monitoring system, and energy consumption deterioration detection method

Abstract

An energy consumption deterioration detection device (11) comprises: a monitoring index value calculation unit (122) that, on the basis of production-related information, which is information relating to past production, calculates a monitoring index value, which is the value of one or more monitoring indices relating to energy consumption in a diagnosis target which includes production equipment; and an energy consumption deterioration detection unit (123) that detects deterioration in energy consumption from the transition of the monitoring index value. The energy consumption deterioration detection device (11) achieves the effect of being able to automatically detect a deterioration in energy saving operations of equipment, without imposing a burden on a user.

Description

Energy consumption deterioration detection device, energy-saving operation deterioration monitoring system, and energy consumption deterioration detection method

[0001] The present disclosure relates to an energy consumption deterioration detection device, an energy-saving operation deterioration monitoring system, and an energy consumption deterioration detection method that detect deterioration in energy consumption in equipment.

[0002] A conventional technique for detecting deterioration in energy consumption of facility equipment is known, in which a reference value is set in advance for each equipment and an actual value measured in the equipment is compared with the reference value. For example, Patent Document 1 describes an energy-saving element extraction device that acquires actual measured values ​​of energy consumption of elements belonging to a system for each element, and acquires a reference value for each element from a reference model that inputs predetermined premise values ​​related to the system and outputs a reference value of energy consumption, and that includes a reference value estimation unit that calculates a difference between the acquired actual value and the acquired reference value for each element.

[0003] JP 2019-86999 A

[0004] However, with the above-mentioned conventional technology, the user is required to set the specifications of the equipment, such as design values ​​indicating the equipment's capabilities and characteristics, and annual energy consumption efficiency, for each equipment in advance, which places a heavy burden on the user.

[0005] The present disclosure has been made in consideration of the above, and aims to provide an energy consumption deterioration detection device that can automatically detect deterioration in energy-saving operation of equipment without placing a burden on the user.

[0006] In order to solve the above-mentioned problems and achieve the objectives, the energy consumption deterioration detection device disclosed herein comprises a monitoring index value calculation unit that calculates a monitoring index value, which is the value of one or more monitoring indexes related to energy consumption in a diagnosis target including production equipment, based on production-related information, which is information related to past production, and an energy consumption deterioration detection unit that detects a deterioration in energy consumption from the trend in the monitoring index value.

[0007] According to the present disclosure, it is possible to automatically detect deterioration in energy-saving operation of equipment without placing a burden on the user.

[0008] FIG. 1 is a system configuration diagram showing the configuration of an energy-saving operation deterioration monitoring system according to a first embodiment; FIG. 2 is a configuration diagram showing the configuration of an energy management device provided in the energy-saving operation deterioration monitoring system according to the first embodiment; FIG. 3 is a diagram showing the configuration of a terminal device provided in the energy-saving operation deterioration monitoring system according to the first embodiment; FIG. 4 is a configuration diagram showing the configuration of an energy consumption deterioration detection device provided in the energy-saving operation deterioration monitoring system according to the first embodiment; FIG. 1 shows an example of the timing at which the energy consumption deterioration detection unit included in the energy consumption deterioration detection device according to the first embodiment detects deterioration in energy consumption in energy-monitored equipment. FIG. 2 shows another example of the timing at which the energy consumption deterioration detection unit included in the energy consumption deterioration detection device according to the first embodiment detects deterioration in energy consumption in energy-monitored equipment. FIG. 3 shows an example of a method for analyzing monitoring index values ​​in the energy consumption deterioration detection unit included in the energy consumption deterioration detection device according to the first embodiment. FIG. 4 shows an example of frequent increases and decreases in the monitoring index values ​​calculated in the energy consumption deterioration detection device according to the first embodiment within a short period of time. FIG. 5 shows an example of a predicted value of the monitoring index value in the energy consumption deterioration detection unit included in the energy consumption deterioration detection device according to the first embodiment. FIG. 6 shows a configuration in which each function of the control unit according to the first embodiment is realized by hardware. FIG. 7 shows a configuration in which each function of the control unit according to the first embodiment is realized by software.

[0009] An energy consumption deterioration detection device, an energy-saving operation deterioration monitoring system, and an energy consumption deterioration detection method according to embodiments will be described in detail below with reference to the accompanying drawings.

[0010] 1 is a system configuration diagram showing the configuration of an energy-saving operation deterioration monitoring system 1 according to the first embodiment. The energy-saving operation deterioration monitoring system 1 according to the first embodiment is a system that automatically detects deterioration in energy consumption of energy-monitoring target equipment and automatically notifies a user of information about the deterioration in energy consumption of the energy-monitoring target equipment, thereby reducing the workload of the user to monitor the energy consumption of the energy-monitoring target equipment. The energy-monitoring target equipment is equipment that is being monitored for deterioration in energy consumption.

[0011] A user of the energy-saving operation deterioration monitoring system 1 according to the first embodiment is, for example, a person involved in the production of goods in the production facility 2 equipped with the energy-saving operation deterioration monitoring system 1. Note that the user of the energy-saving operation deterioration monitoring system 1 is not limited to this.

[0012] As shown in FIG. 1 , the energy-saving operation deterioration monitoring system 1 according to the first embodiment includes a production facility 2, a related facility 3, a first power sensor 4, a second power sensor 5, a production volume sensor 6, an environmental sensor 7, a production management device 8, an energy management device 9, a terminal device 10, and an energy consumption deterioration detection device 11.

[0013] In the energy-saving operation deterioration monitoring system 1, the energy management device 9, the terminal device 10, and the energy consumption deterioration detection device 11 are communicably connected to each other via a network such as the Internet or an intranet, which is a global information communication network. In the first embodiment, the energy management device 9, the terminal device 10, and the energy consumption deterioration detection device 11 are communicably connected to each other via the Internet 110. That is, the energy management device 9, the terminal device 10, and the energy consumption deterioration detection device 11 are connected to the Internet 110, and are capable of transmitting and receiving information to and from each other. The communication between the energy management device 9, the terminal device 10, and the energy consumption deterioration detection device 11 may be wireless communication or wired communication.

[0014] The energy used by the production facility 2 and the related facility 3 is electric power. Note that the energy used by the production facility 2 and the related facility 3 is not limited to electric power, and may be primary energy such as oil, coal, gas, or hydrogen, or may be a combination of electric power and primary energy.

[0015] The production facility 2 executes a production process for producing a plurality of items. In the production facility 2, for example, a production line is formed by a plurality of production devices (not shown). The production facility 2 may also be configured to have only one production device. The items produced by the production facility 2 are, for example, industrial products or work-in-progress of industrial products. Hereinafter, the items produced by the production facility 2 may be referred to as the product to be produced. Note that the product to be produced is not limited to a solid, and may also be a liquid or gas.

[0016] The related equipment 3 is equipment used in connection with the production equipment 2. For example, the related equipment 3 is equipment such as lighting equipment, air conditioners, compressors, or dust collectors, the start switches of which are turned on by workers or the like when the production target products are produced in the production equipment 2. The related equipment 3 is also called utility equipment.

[0017] The first power sensor 4 is attached to the related facility 3 or to a power transmission line that transmits power to the related facility 3, and periodically measures the amount of power consumed by the related facility 3. The first power sensor 4 transmits power consumption information, which is information indicating the measured amount of power consumption, to the energy management device 9 via a dedicated line (not shown) or a network (not shown). The amount of power consumption measured by the first power sensor 4 is an example of energy consumption.

[0018] The second power sensor 5 is attached to the production facility 2 or to a power transmission line that transmits power to the production facility 2, and periodically measures the amount of power consumed by the production facility 2. The second power sensor 5 transmits power consumption information, which is information indicating the measured amount of power consumption, to the energy management device 9 via a dedicated line (not shown) or a network (not shown). The amount of power consumption measured by the second power sensor 5 is an example of energy consumption.

[0019] The production volume sensor 6 is provided in the production facility 2 and periodically measures the production volume of the production facility 2. The production volume sensor 6 transmits production volume information, which is information indicating the measured production volume, to the energy management device 9 via a dedicated line (not shown) or a network (not shown). The production volume sensor 6, for example, counts the number of products to be produced passing through the production line of the production facility 2 and measures the counted value as the production volume. Note that the production volume measured by the production volume sensor 6 is the production flow rate when the products to be produced are liquid or gas. The production volume measured by the production volume sensor 6 may also be expressed in weight or length.

[0020] The environmental sensor 7 periodically measures the production environment, which is the environment in the production process of the production equipment 2. The environmental sensor 7 transmits production environment information, which is information indicating the measured production environment, to the energy management device 9 via a dedicated line (not shown) or a network (not shown). The production environment measured by the environmental sensor 7 includes, for example, the temperature, humidity, carbon dioxide concentration, brightness, noise, or vibration in the room where the production equipment 2 is located. Note that the production environment information may be information input to a terminal device (not shown). In this case, the production environment information is transmitted from the terminal device (not shown) to the energy management device 9 via a dedicated line (not shown) or a network (not shown).

[0021] The information measured by the environmental sensor 7 is used when a monitoring index value calculation unit 122 (described later) of the energy consumption deterioration detection device 11 calculates a monitoring index value. When calculating a monitoring index value for an air conditioner, for example, the monitoring index value calculation unit 122 calculates the monitoring index value by using, as a coefficient for the monitoring index value, the relationship between the amount of energy used and information on the environmental state, such as the ambient temperature of the air conditioner, or information on the operating state of the air conditioner.

[0022] The production management device 8 has a storage unit (not shown) that stores production management information. The production management information includes information for each day, such as equipment types and identification information for multiple pieces of production equipment, multiple indicators related to energy consumption in the diagnosis target including the production equipment, information on energy-saving measures written in natural language, the type of product to be produced, the person in charge of the production process, error information for the production equipment 2, the lot size of the product to be produced, and the takt time for the production equipment 2. The takt time is, for example, the time obtained by dividing the operating hours of the production equipment 2 in one day by the production volume for that day.

[0023] A processing unit (not shown) in the production management device 8 reads out the production management information stored in the memory unit from the memory unit and transmits the read information to the energy management device 9 via a dedicated line (not shown) or a network (not shown). The production management device 8 can acquire part of the production management information from the production facility 2 via a dedicated line (not shown) or a network (not shown).

[0024] The production management device 8 can also identify part of the production management information using an image sensor (not shown). The production management device 8 can also store information input from an input unit (not shown) as part of the production management information. The input unit can accept input from a keyboard or by voice recognition, and output the accepted information to the production management device 8.

[0025] The energy management device 9 collects the power consumption of the production facility 2, the power consumption of the related facility 3, the production volume of the production facility 2, and production environment information from each of the first power sensor 4, the second power sensor 5, the production volume sensor 6, the environmental sensor 7, and the production management device 8. The energy management device 9 transmits the collected information to a data acquisition unit 121 (described later) of the energy consumption deterioration detection device 11 via the Internet 110.

[0026] The various information collected by the energy management device 9, such as the amount of power consumed by the production facility 2, the amount of power consumed by the related facility 3, the production volume of the production facility 2, and production environment information, is referred to as production-related information, which is information related to the production of the energy monitoring target facility. Therefore, the energy management device 9 collects and stores the production-related information and transmits it to the energy consumption deterioration detection device 11.

[0027] Fig. 2 is a configuration diagram showing the configuration of the energy management device 9 included in the energy-saving operation deterioration monitoring system 1 according to the first embodiment. As shown in Fig. 2, the energy management device 9 includes an energy management operation unit 91, an energy management display unit 92, an information acquisition unit 93, an energy management communication unit 94, an energy management storage unit 95, and an energy management control unit 96. Information can be exchanged between the components of the energy management device 9 shown in Fig. 2.

[0028] The energy management operation unit 91 is a functional unit that is operated by a user when using the energy management device 9. The user can use the energy management operation unit 91 to perform operations such as settings related to the collection of various types of information.

[0029] The energy management display unit 92 displays information about the operations performed by the energy management operation unit 91 and information acquired from devices external to the energy management apparatus 9 .

[0030] The information acquisition unit 93 collects production-related information from each of the first power sensor 4, the second power sensor 5, the production volume sensor 6, the environmental sensor 7, and the production management device 8. The information acquisition unit 93 acquires various types of information as production-related information, such as the amount of power consumed by the production equipment 2, the amount of power consumed by the related equipment 3, production volume information, and production environment information.

[0031] The energy management communication unit 94 communicates with devices external to the energy management device 9 .

[0032] The energy management storage unit 95 is a storage unit that stores various production-related information collected from the first power sensor 4, the second power sensor 5, the production volume sensor 6, the environmental sensor 7, and the production management device 8. The energy management storage unit 95 stores the amount of power consumed by the production equipment 2, the amount of power consumed by the related equipment 3, production volume information, production environment information, information used to control the energy management device 9, information input to the energy management operation unit 91, and the like.

[0033] The energy management control unit 96 is a control unit that controls the overall processing of the energy management device 9. The energy management control unit 96 collects production-related information, such as the amount of power consumed by the production facility 2, the amount of power consumed by the related facility 3, the production amount of the production facility 2, and production environment information, from each of the first power sensor 4, the second power sensor 5, the production amount sensor 6, the environmental sensor 7, and the production management device 8. The energy management control unit 96 transmits the collected production-related information to a data acquisition unit 121 (described later) of the energy consumption deterioration detection device 11 via the Internet 110.

[0034] The energy management control unit 96 associates the power consumption information of the related equipment 3 obtained from the first power sensor 4 with the identification information of the related equipment 3 and stores the associated information in the energy management storage unit 95. The energy management control unit 96 associates the power consumption information of the production equipment 2 obtained from the second power sensor 5 with the identification information of the production equipment 2 and stores the associated information in the energy management storage unit 95. The energy management control unit 96 associates the production volume information of the production equipment 2 obtained from the production volume sensor 6 with the identification information of the production equipment 2 and stores the associated information in the energy management storage unit 95. The energy management control unit 96 associates the production environment information of the production equipment 2 obtained from the environment sensor 7 with the identification information of the production equipment 2 and stores the associated information in the energy management storage unit 95.

[0035] The energy management control unit 96 acquires, as production management information, identification information that is information specific to the equipment and that distinguishes between the production equipment 2 and the associated equipment 3, from the production management device 8. The energy management control unit 96 may further associate the identification information of each sensor with the information acquired from each sensor. The energy management device 9 acquires, as production management information, the identification information of each sensor from the production management device 8.

[0036] The terminal device 10 acquires information on the worsening trend of energy consumption from an energy consumption worsening trend notifying unit 124 (described later) of the energy consumption deterioration detection device 11, and displays the information on the worsening trend of energy consumption to notify the user. The terminal device 10 may be a device such as a smartphone, a tablet, or a personal computer.

[0037] 3 is a diagram showing the configuration of the terminal device 10 included in the energy-saving operation deterioration monitoring system 1 according to the first embodiment. As shown in FIG. 3, the terminal device 10 includes a terminal operation unit 101, a terminal display unit 102, a terminal communication unit 103, a terminal storage unit 104, and a terminal control unit 105. Information can be exchanged between the components of the terminal device 10 shown in FIG. 3. A user of the terminal device 10 can input various pieces of information to the energy-saving operation deterioration monitoring system 1, view various pieces of information in the energy-saving operation deterioration monitoring system 1, and the like by operating the terminal operation unit 101 of the terminal device 10.

[0038] The terminal operation unit 101 is a functional unit that is operated by a user when using the energy-saving operation deterioration monitoring system 1. The user uses the terminal operation unit 101 to perform various operations on the operation screen of the energy-saving operation deterioration monitoring system 1 displayed on the terminal display unit 102. The terminal operation unit 101 accepts information input by the user and transmits operation information corresponding to the information to the terminal control unit 105.

[0039] The terminal display unit 102 displays information on the operation of the terminal operation unit 101 and information on the energy-saving operation deterioration monitoring system 1 .

[0040] The terminal communication unit 103 communicates with devices external to the terminal device 10 .

[0041] The terminal memory unit 104 is a memory unit that stores information used to control the terminal device 10, and stores various information such as information used in the energy-saving operation deterioration monitoring system 1, information input in the terminal operation unit 101, and information obtained from the energy management device 9.

[0042] The terminal control unit 105 is a control unit that controls the overall processing of the terminal device 10. The terminal control unit 105 transmits operation information received from the terminal operation unit 101 to a processing unit 12 (described later) of the energy consumption deterioration detection device 11. The terminal control unit 105 transmits operation information corresponding to the operation content operated by the user on the operation screen of the energy-saving operation deterioration monitoring system 1 displayed on the terminal display unit 102 of the terminal device 10 to the processing unit 12 of the energy consumption deterioration detection device 11, and obtains various information corresponding to the user's operation content from the energy consumption deterioration detection device 11 and displays it on the terminal display unit 102.

[0043] The energy consumption deterioration detection device 11 automatically detects deterioration in energy consumption of equipment subject to energy monitoring based on production-related information collected by the energy management device 9, and automatically notifies the user of information about the deterioration in energy consumption of the equipment subject to energy monitoring.

[0044] 4 is a configuration diagram showing the configuration of the energy consumption deterioration detection device 11 included in the energy-saving operation deterioration monitoring system 1 according to the first embodiment. The energy consumption deterioration detection device 11 includes a processing unit 12, a detection storage unit 13, a detection communication unit 14, and a detection control unit 15. The components of the energy consumption deterioration detection device 11 described above can exchange information with each other.

[0045] The processing unit 12 automatically detects deterioration in energy consumption of the energy monitoring target equipment based on the production-related information collected by the energy management device 9, and automatically notifies the user of the information on the deterioration in energy consumption of the energy monitoring target equipment. The processing unit 12 includes a data acquisition unit 121, a monitoring index value calculation unit 122, an energy consumption deterioration detection unit 123, and an energy consumption deterioration trend notification unit 124.

[0046] The data acquisition unit 121 acquires various types of production-related information collected by the energy management device 9, such as the amount of power consumed by the production facility 2, the amount of power consumed by the related facility 3, the production volume of the production facility 2, and production environment information, from the energy management device 9. The information collected by the data acquisition unit 121 may be information represented by either an analog signal or a digital signal.

[0047] The monitoring index value calculation unit 122 calculates, based on the information acquired by the data acquisition unit 121, monitoring index values, which are the values ​​of one or more types of monitoring indexes related to energy consumption in the equipment to be diagnosed, including the production equipment 2 and related equipment 3, at a predetermined period.

[0048] The equipment to be diagnosed is an energy monitoring target equipment that is an object to be monitored for deterioration in energy consumption in the energy-saving operation deterioration monitoring system 1 .

[0049] The monitoring index is an index that is monitored to detect a deterioration in energy consumption.

[0050] The monitoring index value calculation unit 122 updates the monitoring index value stored in the monitoring index value storage unit 132 by adding the calculated monitoring index value to the monitoring index value stored in the monitoring index value storage unit 132 (described later) in association with information on the time when the monitoring index value was collected in the monitoring index value calculation unit 122. The time when the monitoring index value was collected in the monitoring index value calculation unit 122 includes, for example, information on the year, month, and day in addition to information on the hour, minute, and second.

[0051] The types of monitoring indexes calculated by the monitoring index value calculation unit 122 are predetermined and stored in the monitoring index value calculation unit 122, and can be set to any type of monitoring index by the user. The types of monitoring indexes calculated by the monitoring index value calculation unit 122 may be any number of types as long as they are one or more.

[0052] The energy consumption deterioration detection unit 123 detects deterioration of a monitoring index by monitoring, at a predetermined period, the monitoring index value calculated by and stored in the monitoring index value calculation unit 122. The period at which the energy consumption deterioration detection unit 123 checks the monitoring index value is, for example, the same period as the period at which the monitoring index value is calculated by the monitoring index value calculation unit 122.

[0053] The energy consumption deterioration trend notification unit 124 is a notification unit that notifies the user that a deterioration in the monitoring index value has been detected, i.e., that a deterioration in energy consumption has been detected, when the energy consumption deterioration detection unit 123 detects a deterioration in the monitoring index value. The energy consumption deterioration trend notification unit 124 transmits, for example, deterioration trend information notifying that a deterioration in energy consumption has been detected to the terminal device 10 based on the detection result of the energy consumption deterioration detection unit 123. The deterioration trend information is information for notifying the user that a deterioration in energy consumption has been detected in the terminal device 10 that is capable of communicating with the energy consumption deterioration detection device 11. The method of notifying the user may be, for example, notification by email or notification by alarm, and any conventionally known method may be used.

[0054] The detection storage unit 13 is a storage unit that stores information used to control the energy consumption deterioration detection device 11, and stores various information such as information acquired from the energy management device 9 and information generated in the energy consumption deterioration detection device 11. The detection storage unit 13 includes a production-related information storage unit 131 and a monitoring index value storage unit 132.

[0055] The production-related information storage unit 131 stores the production-related information acquired from the energy management device 9. That is, the production-related information storage unit 131 stores various information acquired by the data acquisition unit 121 from the energy management device 9, such as the amount of power consumed by the production equipment 2, the amount of power consumed by the related equipment 3, the production volume of the production equipment 2, and production environment information. Each piece of production-related information is associated with information on the time when the monitoring index value was collected by the monitoring index value calculation unit 122.

[0056] The monitoring index value storage unit 132 stores the monitoring index value calculated by the monitoring index value calculation unit 122 .

[0057] The detection communication unit 14 communicates with devices external to the energy consumption deterioration detection device 11. The detection communication unit 14 transmits information received from devices external to the energy consumption deterioration detection device 11 to the processing unit 12 or the detection control unit 15. The detection communication unit 14 also transmits information received from the energy consumption deterioration trend notification unit 124 and the detection control unit 15 to devices external to the energy consumption deterioration detection device 11.

[0058] The detection control unit 15 is a control unit that controls the overall processing of the energy consumption deterioration detection device 11 .

[0059] Next, a description will be given of the processing of the energy consumption deterioration detection device 11. Fig. 5 is a flowchart showing an example of the processing of the energy consumption deterioration detection device 11 included in the energy-saving operation deterioration monitoring system 1 according to the first embodiment.

[0060] First, in step S110, various data collected by the energy management device 9 is acquired. Specifically, the data acquisition unit 121 of the processing unit 12 acquires the various data collected by the energy management device 9 from the energy management device 9. The various data collected by the energy management device 9 includes information on the measurement results measured by the first power sensor 4, the second power sensor 5, the production volume sensor 6, and the environment sensor 7, as well as production management information stored in the production management device 8. Then, the process proceeds to step S120.

[0061] In step S120, a monitoring index value calculation step, monitoring index values ​​of various data of the energy monitoring target equipment are calculated. Specifically, the monitoring index value calculation unit 122 calculates monitoring index values ​​of the various data acquired in step S110 for the energy monitoring target equipment. That is, the monitoring index value calculation unit 122 calculates monitoring index values ​​of the various data of the first power sensor 4, the second power sensor 5, the production volume sensor 6, and the environmental sensor 7 using the production management information acquired in step S110. The monitoring index value calculation unit 122 transmits the calculated monitoring index values ​​to the monitoring index value storage unit 132 and stores the monitoring index values ​​in the monitoring index value storage unit 132. Then, the process proceeds to step S130.

[0062] 6 is a diagram showing an example of a monitoring index value calculated by the monitoring index value calculation unit 122 included in the energy consumption deterioration detection device 11 according to embodiment 1. The number of monitoring index values ​​may be one or more, and the number may be increased as necessary.

[0063] 6 is the time from when the production facility 2 is turned on to when production by the production facility 2 starts. The monitoring index value calculation unit 122 calculates, for example, the difference between the time when the power consumption of the production facility 2 reaches a predetermined power consumption threshold Pth and the time when the production volume of the production facility 2 reaches a predetermined production volume threshold Mth. Information on the power consumption threshold Pth and the production volume threshold Mth is acquired as production management information from the production management device 8 via the energy management device 9, or is determined in advance and stored in the monitoring index value calculation unit 122 or the detection storage unit 13.

[0064] The monitoring index value calculation unit 122 can calculate the equipment start-up time loss by subtracting the time required to produce one product by the production equipment 2 from the calculated time difference. The production volume measured by the production volume sensor 6 is counted when the product is discharged from the production equipment. After production of the products starts, the period from the production start time of the first product to the discharge of the first product is the period during which production work is being performed on the first product. Therefore, the monitoring index value calculation unit 122 calculates the equipment start-up time loss by subtracting the time corresponding to this period from the calculated time difference. Such equipment start-up time loss can be considered wasted time from when the production equipment 2 is started up until production starts, and can be considered time during which energy is consumed that does not contribute to production.

[0065] Furthermore, the "basic unit" monitoring index value shown in FIG. 6 indicates the amount of power consumption per unit of production. The amount of power consumption per unit of production can be obtained, for example, by dividing the amount of power consumption in one day by the production volume in one day. The production volume is expressed in any unit, such as the number, weight, or length of the products to be produced. Information on the production volume in one day is acquired as production management information from the production management device 8 via the energy management device 9.

[0066] The monitoring index value calculation unit 122 calculates other monitoring index values ​​that are correlated with energy consumption in the equipment being monitored, such as "equipment startup time loss," "related equipment loss," and "production time rate." Equipment startup time loss is the time from when production by production equipment 2 ends until production equipment 2 is turned off. Related equipment loss is the difference between the time that related equipment 3 is on and the time that production equipment 2 is on. The production time rate is the proportion of the time that production equipment 2 is producing during the time that production equipment 2 is on.

[0067] In step S130, an energy consumption deterioration detection step, an analysis of the monitoring index values ​​is performed. Specifically, the energy consumption deterioration detection unit 123 analyzes the monitoring index values ​​associated with the collection times and stored in the monitoring index value storage unit 132. The energy consumption deterioration detection unit 123 analyzes the monitoring index values ​​to detect and verify an upward trend in the transition of the monitoring index values.

[0068] As described above, the monitoring index value storage unit 132 is associated with information on the time when the monitoring index values ​​were collected by the monitoring index value calculation unit 122. The energy consumption deterioration detection unit 123 creates time-series data of the monitoring index values ​​by aggregating the multiple monitoring index values ​​stored in the monitoring index value storage unit 132 in the order of the time associated with the monitoring index values. The energy consumption deterioration detection unit 123 then analyzes the trends in the monitoring index values ​​indicated by the time-series data to detect deterioration in energy consumption in the equipment subject to energy monitoring.

[0069] Specifically, the energy consumption deterioration detection unit 123 determines that the energy consumption of the energy monitored equipment has deteriorated when the trend of the monitoring index value indicated by the time-series data of the monitoring index value rises sharply in a short period of time or falls sharply in a short period of time. Also, the energy consumption deterioration detection unit 123 determines that the energy consumption of the energy monitored equipment has deteriorated when the trend of the monitoring index value indicated by the time-series data of the monitoring index value rises slowly in a long period of time or falls slowly in a long period of time.

[0070] Here, a deterioration in energy consumption means that, for monitoring index values ​​such as power consumption and energy usage, an increase in the trend of the monitoring index value indicates a deterioration in energy consumption, and the trend of the monitoring index value indicates a positive correlation. A positive correlation in the trend of the monitoring index value indicates a positive correlation between time and the monitoring index value. Conversely, for monitoring index values ​​such as availability rate and first-run rate, a decrease in the trend of the monitoring index value indicates a deterioration in energy consumption, and the trend of the monitoring index value indicates a negative correlation. A negative correlation in the trend of the monitoring index value indicates a negative correlation between time and the monitoring index value.

[0071] That is, for monitoring index values ​​whose trends show a positive correlation, the energy consumption deterioration detection unit 123 determines that energy consumption is worsening when the trend in the monitoring index value increases, and for monitoring index values ​​whose trends show a negative correlation, the energy consumption deterioration detection unit 123 determines that energy consumption is worsening when the trend in the monitoring index value decreases.

[0072] Whether the transition of the monitoring index value indicates a positive correlation or a negative correlation varies depending on the type of monitoring index value. For this reason, the monitoring index value calculation unit 122 stores in advance information on whether the transition of the monitoring index value indicates a positive correlation or a negative correlation when the energy consumption of the energy-monitored equipment deteriorates. Then, when calculating the monitoring index value, the monitoring index value calculation unit 122 determines whether the monitoring index value indicates a positive correlation or a negative correlation. In this way, the monitoring index value calculation unit 122 can appropriately determine the deterioration of energy consumption of the energy-monitored equipment, including the determination result of whether the transition of the monitoring index value indicates a positive correlation or a negative correlation.

[0073] Fig. 7 is a diagram showing an example of the timing at which the energy consumption deterioration detection unit 123 included in the energy consumption deterioration detection device 11 according to the first embodiment detects a deterioration in energy consumption in an energy monitoring target facility. Fig. 8 is a diagram showing another example of the timing at which the energy consumption deterioration detection unit 123 included in the energy consumption deterioration detection device 11 according to the first embodiment detects a deterioration in energy consumption in an energy monitoring target facility. Figs. 7 and 8 show an example in which the monitoring index value calculated by the monitoring index value calculation unit 122 increases. The horizontal axis of the graphs shown in Figs. 7 and 8 represents time. The vertical axis of the graphs shown in Figs. 7 and 8 represents the monitoring index value.

[0074] In the graph shown in Figure 7, timing T11 indicates the timing at which the energy consumption deterioration detection unit 123 detects a deterioration in energy consumption in the energy monitoring target equipment by detecting a sudden deterioration in the monitoring index value over a short period of time. Also, in the graph shown in Figure 8, timing T12 indicates the timing at which the energy consumption deterioration detection unit 123 detects a deterioration in energy consumption in the energy monitoring target equipment by detecting a gradual deterioration in the monitoring index value over a long period of time. Timings T11 and T12 are the timings at which the energy consumption deterioration detection unit 123 determines that the monitoring index value is on an upward trend. The energy consumption deterioration detection unit 123 determines the timing at which the energy consumption of the energy monitoring target equipment has deteriorated based on the transition of any of the above monitoring index values.

[0075] That is, the energy consumption deterioration detection unit 123 monitors the monitoring index value over a predetermined, relatively short period, and detects a deterioration in energy consumption in the energy monitoring target equipment by detecting that the monitoring index value has deteriorated rapidly beyond a predetermined judgment criterion during that period. Also, the energy consumption deterioration detection unit 123 monitors the monitoring index value over a predetermined, relatively long period, and detects a deterioration in energy consumption in the energy monitoring target equipment by detecting that the monitoring index value has deteriorated gradually beyond a predetermined judgment criterion during that period. The judgment criterion is predetermined and stored in the energy consumption deterioration detection unit 123 or the detection memory unit 13.

[0076] 9 is a diagram showing an example of a method for analyzing a monitoring index value in the energy consumption deterioration detection unit 123 included in the energy consumption deterioration detection device 11 according to the first embodiment. The horizontal axis of the graph shown in Fig. 9 represents time. The vertical axis of the graph shown in Fig. 9 represents a monitoring index value.

[0077] The energy consumption deterioration detection unit 123 divides the time series data of monitoring index values ​​into predetermined time intervals to be analyzed for the monitoring index values. Hereinafter, the predetermined time interval will be referred to as the time window T21. Furthermore, data obtained by dividing the time series data of monitoring index values ​​by the time window T21 will be referred to as time window data D21. The energy consumption deterioration detection unit 123 compares the time window data D21 of the time window T21 to be analyzed with time window data D21 of a period prior to the time window T21 to be analyzed, and calculates the difference. Specifically, the energy consumption deterioration detection unit 123 calculates the difference in feature values ​​within the time window data D21 between the time window data D21 of the time window T21 to be analyzed and the time window data D21 of a period prior to the time window T21 to be analyzed.

[0078] The feature value in the time window data D21 is the maximum value in the time window T21, the value obtained by subtracting the minimum value from the maximum value, the average value, the root mean square value, the variance, the standard deviation, etc. As an index of the difference in the feature value, a common analytical method such as the F1 score, the Mahalanobis distance, or the cosine distance is used.

[0079] Here, changing the index according to the characteristics of the data is likely to improve the accuracy of representing differences in feature values. A general index other than the above may be used for the feature values ​​in the time window data D21. Furthermore, a single type of index may be applied to the feature values ​​in the time window data D21 without differentiating between them.

[0080] An example of a method for extracting the time window data D21 for calculating the difference is shown below. For example, in a graph of time-series data of monitoring index values ​​as shown in FIG. 9 , the energy consumption deterioration detection unit 123 slides the time window T21 to be analyzed by one line at a time toward a period earlier than the time window T21 to be analyzed, and extracts the time window data D21 for the slid section. The sliding width and the time window width may be set arbitrarily. Furthermore, the time windows T21 may or may not overlap. The time window T21 does not need to have a fixed width; for example, the time window width of the time window T21 may be different for a period in which no deterioration has occurred in the past and a period in which the most recent deterioration is desired to be monitored. Then, the energy consumption deterioration detection unit 123 detects the time window data D21 in which a change equal to or greater than a predetermined criterion is observed in the index value of the difference in the feature values ​​as a change section T31, which is a key period for the deterioration of energy consumption.

[0081] The objective here is to detect the interval during which the transition of the monitoring index value continues to change and the time point at which the transition of the monitoring index value starts to change. To achieve this objective, the first time point at which the index value of the difference between the feature values ​​in the time window T21 statistically fluctuates is detected.

[0082] The threshold for determining whether the trend in the monitoring index value has changed can be set to any value for each data item or for all data items collectively. That is, the threshold for determining whether the feature value of the time window T21 has changed can be set to any value for each monitoring index or for all monitoring indexes collectively. The threshold is determined in advance and stored in the energy consumption deterioration detection unit 123 or the detection storage unit 13. The threshold may also be automatically determined based on the feature amount, which is the amount of difference between the feature values, or on statistics of the difference between the feature values. The period from one change point to the next change point in the trend in the monitoring index value is detected as a period of deterioration candidate.

[0083] As an example of a graphical display of monitoring index values ​​when a deterioration in energy consumption is detected, deterioration candidate segments and monitoring index values ​​when a deterioration in energy consumption is detected are displayed in different colors, such as using colors closer to red in order of the greatest deterioration in the monitoring index values ​​indicated by the detection results of the energy consumption deterioration detection unit 123. This allows the user to easily recognize that a deterioration in the time-series data of the monitoring index values ​​is occurring at that position by viewing the graph on the terminal device 10. The method of displaying the graph of monitoring index values ​​when energy consumption is worsening does not have to be distinguished by color, and any method that allows the user to recognize it can be used, such as flashing deterioration candidate segments with a greater deterioration in the monitoring index value. Then, proceed to step S140.

[0084] In step S140, it is determined whether or not the energy consumption in the energy monitoring target equipment has worsened. Specifically, the energy consumption deterioration detection unit 123 determines whether or not the energy consumption in the energy monitoring target equipment has worsened based on the analysis of the transition of the monitoring index value in step S130.

[0085] If it is determined that the energy consumption in the energy monitoring target equipment has worsened, the answer is Yes in step S140, and the process proceeds to step S150. If it is determined that the energy consumption in the energy monitoring target equipment has not worsened, the answer is No in step S140, and the series of processes ends.

[0086] In step S150, it is determined whether the monitoring index for which it is determined in step S140 that energy consumption in the energy monitoring target equipment has worsened is an index for which a notification to the user is to be made. Specifically, the energy consumption deterioration trend notifying unit 124 determines whether the monitoring index for which it is determined in step S140 that energy consumption in the energy monitoring target equipment has worsened is an index for which a notification to the user is to be made.

[0087] If it is determined in step S140 that the monitoring index for which it is determined that energy consumption in the energy monitoring target equipment has worsened is one that should be notified to the user, then the answer is Yes in step S150, and the process proceeds to step S 160. If it is determined in step S140 that the monitoring index for which it is determined that energy consumption in the energy monitoring target equipment has worsened is one that should not be notified to the user, then the answer is No in step S150, and the process ends.

[0088] The indicators to be notified are monitoring indicators that are to be notified to the user when it is determined that energy consumption in the energy monitoring target equipment has worsened. Information on the indicators to be notified is stored in advance in the energy consumption deterioration trend notifying unit 124 or the detection storage unit 13. The information on the indicators to be notified can be set by the user.

[0089] 10 is a diagram showing an example in which the monitoring index value calculated by the energy consumption deterioration detection device 11 according to the first embodiment frequently increases or decreases in a short period of time. The horizontal axis of the graph shown in FIG. 10 represents time. The vertical axis of the graph shown in FIG. 10 represents the monitoring index value.

[0090] In the case of a change section T31 in which a monitoring index repeatedly increases and decreases in a short period of time, notifications will be issued frequently if the monitoring index is set as an index to be notified. For this reason, the user can exclude the monitoring index from the list of indexes to be notified and make it an index not subject to notification. Any criteria can be used for excluding a monitoring index from notification, such as a specific period after one notification, or a period or number of times when the number of times the monitoring index is determined to be on an upward trend exceeds a predetermined specific number.

[0091] Finally, in step S160, in the transmission step, information on the worsening trend in energy consumption, which is a notification that there is a worsening trend in energy consumption, is notified to the user. Specifically, the energy consumption worsening trend notifying unit 124 notifies the user that there is a worsening trend in energy consumption by sending a notification that there is a worsening trend in energy consumption to the terminal device 10. When the terminal device 10 receives the notification that there is a worsening trend in energy consumption, it displays the notification on the terminal display unit 102 and presents it to the user. By performing the above processing, a series of processes in the energy consumption worsening detection device 11 is completed.

[0092] In step S130, in which the monitoring indexes are analyzed to detect and verify an upward trend in the monitoring indexes, not only a deterioration in the index values ​​of the monitoring indexes but also an improvement in the monitoring indexes is detected, making it possible to identify facilities or equipment whose energy consumption is showing an improvement trend and notify the user.

[0093] In this case, the energy consumption deterioration detection unit 123 monitors the monitoring index value over a predetermined, relatively short period, and detects an improvement in energy consumption in the energy monitoring target equipment by detecting that the monitoring index value has improved more rapidly than a predetermined judgment criterion during that period. Also, the energy consumption deterioration detection unit 123 monitors the monitoring index value over a predetermined, relatively long period, and detects an improvement in energy consumption in the energy monitoring target equipment by detecting that the monitoring index value has improved more gradually than a predetermined judgment criterion during that period. The judgment criterion is predetermined and stored in the energy consumption deterioration detection unit 123 or the detection memory unit 13.

[0094] In step S130, the energy consumption deterioration detection unit 123 extracts, as the same group, multiple pieces of equipment whose monitoring index values ​​are expected to behave in the same way when the equipment is operating in a normal energy-saving manner, i.e., whose monitoring index values ​​are expected to show the same trends when the equipment is operating in a normal energy-saving manner. Then, in monitoring the daily monitoring index values ​​of the equipment included in the same group, the energy consumption deterioration detection unit 123 can detect equipment whose monitoring index values ​​do not behave in the same way, i.e., equipment whose monitoring index values ​​do not show the same trends, as equipment whose monitoring index value trends are changing. Then, the energy consumption deterioration trend notification unit 124 sends a notification to the terminal device 10 that a change has occurred in the monitoring index value for the detected equipment.

[0095] That is, the energy consumption deterioration detection unit 123 extracts, from among multiple monitoring index values ​​of the monitoring target, multiple monitoring indexes whose movements are highly correlated based on predetermined correlation criteria as monitoring index values ​​of the same group. In daily monitoring of the monitoring indexes included in the same group, the energy consumption deterioration detection unit 123 detects, among the multiple highly correlated monitoring indexes, monitoring indexes whose correlation has been lost based on the predetermined correlation criteria as monitoring indexes whose monitoring index value trends are changing. Then, the energy consumption deterioration trend notification unit 124 sends a notification to the terminal device 10 that the detected monitoring indexes are showing movements that are causing a change in the monitoring index values.

[0096] As a result, the energy consumption deterioration detection device 11 can notify the user that a change has occurred in the monitoring index value for equipment whose trend in the monitoring index value deviates from the trend in the monitoring index values ​​of other equipment, and encourage the user to be careful.

[0097] FIG. 11 is a diagram showing an example of a predicted value of a monitoring index value in the energy consumption deterioration detection unit 123 included in the energy consumption deterioration detection device 11 according to the first embodiment. The horizontal axis of the graph shown in FIG. 11 represents time. The vertical axis of the graph shown in FIG. 11 represents a monitoring index value. The energy consumption deterioration detection unit 123 monitors the monitoring index value for the monitoring index to be monitored during a period T41 shown in FIG. 11 , and detects a deterioration in the monitoring index at time T42, thereby detecting a deterioration in energy consumption. If energy consumption deteriorates at time T42, the energy consumption deterioration detection unit 123 uses a simulation function to predict a deterioration in the future monitoring index for a period T43 that is a future period after time T42. Then, the energy consumption deterioration trend notification unit 124 notifies the user of information about the predicted deterioration in the future monitoring index.

[0098] That is, when energy consumption worsens at time T42, the energy consumption deterioration detection unit 123 acquires data on past monitoring index values ​​from the monitoring index value storage unit 132 and compares the trend in the monitoring index values ​​for period T41 with the trend in the past monitoring index values. The data on the past monitoring index values ​​may be data on the monitoring index of the monitoring target, or may be data on a monitoring index other than the monitoring target.

[0099] The energy consumption deterioration detection unit 123 extracts past monitoring index values ​​similar to the trend of the monitoring index values ​​in period T41 based on a predetermined similarity criterion. The energy consumption deterioration detection unit 123 determines, among the extracted past trends of monitoring index values, the trend of the monitoring index values ​​for a period following a period similar to the trend of the monitoring index values ​​of the monitoring target as the predicted value of the monitoring index for period T43 of the monitoring target. In other words, the energy consumption deterioration detection unit 123 predicts and determines the time-series data D41 of the monitoring index values ​​for period T43 as the predicted value of the monitoring index for period T43 of the monitoring target. Then, the energy consumption deterioration trend notification unit 124 notifies the user of information on the predicted value of the monitoring index for period T43 as information on predicted deterioration of the monitoring index in the future.

[0100] This allows the energy consumption deterioration detection device 11 to assist the user in prioritizing equipment improvement work, etc. Furthermore, the predicted value of the monitoring index predicted by the simulation function of the energy consumption deterioration detection unit 123 may be a predicted value for improvement in energy consumption.

[0101] According to the above-described first embodiment, an energy consumption deterioration detection device is realized, which includes a monitoring index value calculation unit that calculates a monitoring index value, which is the value of one or more monitoring indexes related to energy consumption in a diagnosis target including production equipment, based on production-related information, which is information related to past production, and an energy consumption deterioration detection unit that detects deterioration in energy consumption from the trend in the monitoring index value.

[0102] As described above, in the energy-saving operation deterioration monitoring system 1 according to the first embodiment, the energy consumption deterioration detection device 11 is configured such that the monitoring index value calculation unit 122 automatically calculates a monitoring index value, which is the value of one or more monitoring indexes related to energy consumption in the diagnosis target including the production equipment 2, based on production-related information, which is information related to past production; the energy consumption deterioration detection unit 123 automatically detects deterioration in energy consumption from the trend in the monitoring index value; and the energy consumption deterioration trend notification unit 124 automatically transmits the detection result of the energy consumption deterioration detection unit 123 to the terminal device 10.

[0103] The energy consumption deterioration detection device 11 configured in this manner can automatically and easily detect deterioration in energy consumption in energy monitoring target equipment without the user having to monitor the energy consumption status of the energy monitoring target equipment themselves.

[0104] Furthermore, for monitoring index values ​​whose trends show a positive correlation, the energy consumption deterioration detection unit 123 of the energy consumption deterioration detection device 11 determines that energy consumption is worsening when the trend of the monitoring index value increases. Furthermore, for monitoring index values ​​whose trends show a negative correlation, the energy consumption deterioration detection unit 123 determines that energy consumption is worsening when the trend of the monitoring index value decreases. This allows the energy consumption deterioration detection unit 123 to appropriately determine the deterioration of energy consumption according to each type of monitoring index.

[0105] Furthermore, when the energy consumption deterioration detection unit 123 detects a deterioration in energy consumption, it extracts past monitoring index values ​​similar to the trend in the monitoring index values ​​of the monitoring target.The energy consumption deterioration detection unit 123 then determines, from the extracted trends in past monitoring index values, the trend in the monitoring index values ​​for a period following a period similar to the trend in the monitoring index of the monitoring target as a predicted value of the future monitoring index for the monitoring index of the monitoring target.In this way, the energy consumption deterioration detection device 11 can support the user in prioritizing improvement work for equipment, etc.

[0106] Furthermore, the energy consumption deterioration detection unit 123 preliminarily extracts, from among the multiple monitoring index values ​​of the monitoring target, multiple monitoring indexes whose movements are highly correlated as monitoring index values ​​of the same group. Then, in monitoring the monitoring indexes included in the same group, the energy consumption deterioration detection unit 123 detects monitoring indexes whose correlation has become unresolved as monitoring indexes whose trends have changed. This allows the energy consumption deterioration detection device 11 to notify the user that a change has occurred in the monitoring index value of equipment whose trends in monitoring index value deviate from the trends of the monitoring index values ​​of other equipment, thereby calling the user's attention.

[0107] Therefore, according to the energy-saving operation deterioration monitoring system 1 and the energy consumption deterioration detection device 11 of embodiment 1, it is possible to automatically detect operational deterioration and notify the user, even if the user does not regularly monitor the energy consumption status of the energy-monitored equipment.

[0108] Next, the hardware configuration of each of the control units 200 according to the first embodiment will be described. The control unit 200 according to the first embodiment corresponds to each of the information acquisition unit 93 and the energy management control unit 96 of the energy management device 9, the terminal control unit 105 of the terminal device 10, and the processing unit 12 and the detection control unit 15 of the energy consumption deterioration detection device 11. Each function of the control unit 200 according to the first embodiment is realized by a processing circuit. The processing circuit may be dedicated hardware, or may be a processing unit that executes a program stored in a storage device.

[0109] When the processing circuit is dedicated hardware, the processing circuit may be a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an application specific integrated circuit, a field programmable gate array, or a combination thereof. Figure 12 is a diagram showing a configuration in which each function of the control unit 200 according to the first embodiment is realized by hardware. The processing circuit 201 incorporates a logic circuit 201a that realizes the functions of the control unit 200.

[0110] When the processing circuit 201 is a processing device, the functions of the control unit 200 are realized by software, firmware, or a combination of software and firmware.

[0111] FIG. 13 is a diagram illustrating a configuration in which the functions of the control unit 200 according to the first embodiment are implemented by software. The processing circuit 201 includes a processor 211 that executes a program 201b, a random access memory 212 that the processor 211 uses as a work area, and a storage device 213 that stores the program 201b. The processor 211 loads the program 201b stored in the storage device 213 onto the random access memory 212 and executes it, thereby realizing the functions of the control unit 200. The software or firmware is written in a programming language and stored in the storage device 213. The processor 211 may be, but is not limited to, a central processing unit. The storage device 213 may be a semiconductor memory such as a random access memory (RAM), a read-only memory (ROM), a flash memory, an erasable programmable read-only memory (EPROM), or an electrically erasable programmable read-only memory (EEPROM). The semiconductor memory may be either a non-volatile memory or a volatile memory. In addition to semiconductor memory, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, or a DVD (Digital Versatile Disc) can be used as the storage device 213. The processor 211 may output data such as calculation results to the storage device 213 for storage, or may store the data in an auxiliary storage device (not shown) via the random access memory 212. By integrating the processor 211, the random access memory 212, and the storage device 213 on a single chip, the functions of the control unit 200 can be realized by a microcomputer.

[0112] The processing circuit 201 reads and executes the program 201b stored in the storage device 213 to realize the functions of the control unit 200. It can also be said that the program 201b causes a computer to execute the procedures and methods for realizing the functions of the control unit 200.

[0113] The processing circuit 201 may be configured to implement some of the functions of the control unit 200 using dedicated hardware and some of the functions of the control unit 200 using software or firmware.

[0114] In this way, the processing circuitry 201 can realize each of the above-described functions by hardware, software, firmware, or a combination of these.

[0115] The configurations shown in the above embodiments are merely examples, and may be combined with other known technologies, and parts of the configurations may be omitted or modified without departing from the spirit of the invention.

[0116] 1 Energy-saving operation deterioration monitoring system, 2 Production equipment, 3 Related equipment, 4 First power sensor, 5 Second power sensor, 6 Production volume sensor, 7 Environmental sensor, 8 Production management device, 9 Energy management device, 10 Terminal device, 11 Energy consumption deterioration detection device, 12 Processing unit, 13 Detection memory unit, 14 Detection communication unit, 15 Detection control unit, 91 Energy management operation unit, 92 Energy management display unit, 93 Information acquisition unit, 94 Energy management communication unit, 95 Energy management memory unit, 96 Energy management control unit, 101 Terminal operation unit, 102 Terminal display unit, 103 Terminal communication unit, 104 Terminal memory unit, 105 Terminal control unit, 110 Internet, 121 Data acquisition unit, 122 Monitoring index value calculation unit, 123 Energy consumption deterioration detection unit, 124 Energy consumption deterioration trend notification unit, 131 Production-related information memory unit, 132 Monitoring index value storage unit, 200 control unit, 201 processing circuit, 201a logic circuit, 201b program, 211 processor, 212 random access memory, 213 storage device, D21 time window data, Mth production volume threshold, Pth power consumption threshold, T21 time window, T31 change section, T41, T43 period, T42 time.

Claims

1. An energy consumption deterioration detection device comprising: a monitoring index value calculation unit that calculates monitoring index values, which are values ​​of one or more monitoring indexes related to energy consumption in a diagnosis target including production equipment, based on production-related information, which is information related to past production; and an energy consumption deterioration detection unit that detects deterioration in the energy consumption from changes in the monitoring index values.

2. An energy consumption deterioration detection device as described in claim 1, characterized in that it is provided with a notification unit that transmits the detection results of the energy consumption deterioration detection unit to a terminal device that is capable of communicating with the energy consumption deterioration detection device.

3. The energy consumption deterioration detection device according to claim 2, wherein the notification unit transmits deterioration trend information, which is information for notifying the user on the terminal device that a deterioration in energy consumption has been detected.

4. The energy consumption deterioration detection device described in any one of claims 1 to 3, characterized in that, for the monitoring index value whose trend shows a positive correlation, the energy consumption is judged to have deteriorated when the trend of the monitoring index value increases, and for the monitoring index value whose trend shows a negative correlation, the energy consumption is judged to have deteriorated when the trend of the monitoring index value decreases.

5. An energy consumption deterioration detection device as described in any one of claims 1 to 3, comprising a monitoring index value storage unit that stores the monitoring index value calculated by the energy consumption deterioration detection unit, wherein the energy consumption deterioration detection unit extracts past monitoring index values ​​that are similar to the trend of the monitoring index value of the monitored object, and predicts future monitoring index values ​​based on the extracted past monitoring index values.

6. The energy consumption deterioration detection device described in any one of claims 1 to 3, characterized in that the energy consumption deterioration detection unit extracts, from the multiple monitoring index values, multiple monitoring indexes that have a high correlation in the movements of the monitoring index values ​​as monitoring indexes of the same group, and detects, among the multiple monitoring indexes included in the same group that have a high correlation, a monitoring index that has lost the correlation as a monitoring index that has experienced a change in the trend of its monitoring index value.

7. An energy consumption deterioration detection device comprising: a monitoring index value calculation unit that calculates a monitoring index value, which is the value of one or more monitoring indexes related to energy consumption in a diagnosis target including production equipment, based on production-related information, which is information related to past production; and an energy consumption deterioration detection unit that detects deterioration in energy consumption from changes in the monitoring index value; an energy management device that stores the production-related information and transmits it to the energy consumption deterioration detection device; and a terminal device that acquires the detection results of the energy consumption deterioration detection unit and notifies the user of the detection results.

8. A method for detecting deterioration in energy consumption, comprising: a monitoring index value calculation step in which an energy consumption deterioration detection device calculates monitoring index values, which are values ​​of one or more monitoring indexes related to energy consumption in a diagnosis target including production equipment, based on production-related information, which is information related to past production; and an energy consumption deterioration detection step in which the energy consumption deterioration detection device detects deterioration in energy consumption from trends in the monitoring index values.

9. The energy consumption deterioration detection method described in claim 8, characterized in that the energy consumption deterioration detection device includes a transmission step in which the detection result in the energy consumption deterioration detection step is transmitted to a terminal device capable of communicating with the energy consumption deterioration detection device.

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