JP2001356814A - System for controlling energy and method for controlling energy consumption - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display data related with energy consumption by each control unit such as a preliminarily grouped department, a line (production line), each process of the line, and a facility. SOLUTION: Plural measuring equipment 1 is connected through a signal line 8 to a slave sequencer 2, and the slave sequencer 2 is connected through a network 9 to a master sequencer 3. The master sequencer 3, a personal computer 4 for collection, an energy measuring server 5, a personal computer 6 for control, and a client 7 are connected through an LAN 10 to each other. The energy measuring server 5 processes the data registered by the personal computer 4 for collection, and holds (stores) various master information to be displayed in various configurations as a data base file. In this case, target achievement situation data calculated from target energy consumption and actual energy consumption by each control unit are obtained as the master information. The energy measuring server 5 is provided with the function of a Web server.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energy management system and an energy consumption management method, and more particularly to an energy management system which manages energy consumption for each department (management unit) such as each production line in a company. The present invention relates to a system and an energy consumption management method.

[0002]

2. Description of the Related Art In recent years, global warming has become a global problem, and it has been required for each country to reduce carbon dioxide emissions. To reduce carbon dioxide emissions, it is necessary to reduce the amount of energy used. However, if the amount of energy used is simply reduced, the factory cannot maintain the same productivity as before. Therefore, for example, in a factory, it is required to reduce the amount of energy used without lowering productivity, and it is necessary to eliminate useless use of energy.

Conventionally, in a factory, for example, the amount of power consumption is measured by a wattmeter provided in a power receiving facility of the factory, and the measurement result is printed out in a power receiving daily report as an hourly usage amount for one day. You. Also, the power consumption is measured for each part of the factory or each line for about one day a month, and the power consumption for each department, each production line, etc. is proposed based on the measured value and the power consumption of the whole factory. I was asking for it.

In recent years, a large number of measuring instruments for detecting the power consumption of each power use facility have been connected to a child sequencer, and the child sequencer has been connected to a parent sequencer via a network.
There is a system in which a parent sequencer is connected to a management computer via a LAN. In this system, since the data of each measuring instrument is collected by the management computer, it is possible to grasp the detailed power usage by using the data.

Japanese Patent Laid-Open Publication No. Hei 8-50501 discloses that
A method has been proposed in which various buildings existing in a wide area are managed and energy consumption is suppressed to a target value. In this method, energy consumption information (power consumption information) of each building is collected at a predetermined cycle, and based on the information, the energy consumption at the end of the current management unit section (power consumption at the end of this month, etc.) is calculated. Prediction is performed, and when it is determined that the predicted amount exceeds the target value, control is performed so as to shorten the energy use time so as to suppress the energy consumption and to increase the cooling temperature.

Japanese Patent Application Laid-Open No. 7-274394 discloses a control system for controlling the start / stop of a plurality of devices, based on the power capacities of a plurality of devices and the amount of power used per unit time. A method is disclosed in which a predicted value of the total power consumption is calculated, and when it is determined that the predicted value exceeds the contracted power, devices with lower priorities are stopped.

[0007]

In the methods disclosed in the above publications, energy consumption can be reduced to a target value or less. However, when this method is applied to a factory, there is a problem that productivity is reduced. is there.

In order to achieve the purpose of reducing energy consumption without lowering productivity, it is necessary to grasp whether or not the current energy consumption is properly performed without waste. However, when the method of measuring the amount of used electric power by using a power meter provided in a power receiving facility of a factory is adopted, the accuracy of energy measurement is 1 in terms of CO ₂ emission.
000 t / year (5 million kWh / year in terms of electric power), which is of little use in formulating rough and detailed energy saving measures.

In order to reduce energy consumption without lowering productivity, it is necessary for all members of a company to be conscious of eliminating waste and making improvements for energy saving. For that purpose, it is necessary to at least understand the state of the energy consumption of the department or the production line to which each belongs. In a system that collects the detection data of a large number of measuring instruments by a management computer, it is possible to grasp a detailed power usage state by using the collected data. However, in the conventional configuration, it is necessary to grasp the power use status by operating a management computer or by providing a dedicated terminal in a department and looking at the terminal. Therefore, no one could use the data freely.

In addition, in the conventional system, when a measuring instrument is added or changed, the child sequencer needs to be remodeled. The present invention has been made in view of the above problems, and a first object of the present invention is to provide data relating to energy consumption to any member of an organization without providing a dedicated terminal.
It is to provide an energy management system that can be freely grasped.

A second object is an energy management system capable of displaying data relating to the energy consumption of each facility for each management unit such as a department, a line (production line), each process of the line, each facility, etc. And an energy consumption management method.

It is a third object of the present invention to provide an energy management system and an energy consumption management method capable of easily grasping the state of achievement of the energy consumption target for each management unit.

[0013]

In order to achieve the first object, according to the first aspect of the present invention, there are provided a plurality of measuring instruments for measuring physical quantities related to energy consumption of each facility consuming energy, and each of the measuring instruments. Data collection means for collecting measurement data of a measuring instrument, a processing server connected to the measurement data collection means via a network, processing the data collected by the measurement data collection means, storing the processed data, and a Web server A server having a function; and a terminal device connected to the server via the network and having a browser.

Accordingly, in the present invention, physical quantities (eg, electric energy, electric current,
Voltage, temperature, gas usage, etc.)
The measurement data is collected by the measurement data collection unit. The collected data is processed by a server, and the processed data is stored in the server. The data stored in the server can be freely used by a terminal device connected to the server via a network. The terminal device can easily use the stored data of the server by connecting a general-purpose personal computer having a browser instead of a dedicated terminal to a network.

According to a second aspect of the present invention, in the first aspect of the present invention, the server performs a process for displaying measurement data in real time on the terminal device. Therefore, in the present invention, the physical quantity related to the energy consumption of each facility can be monitored in real time by the terminal device.

In order to achieve the second object, according to the third aspect of the present invention, there are provided a plurality of measuring instruments for measuring a physical quantity related to energy consumption of each equipment consuming energy, and measurement data of each measuring instrument. Measurement data collecting means, which is connected to the measurement data collecting means via a network, and collects the data collected by the measurement data collecting means in units of preset management units such as departments, lines, and facilities. Data processing storage means for processing and accumulating consumption data into displayable data, and display means for displaying data stored in the data processing storage means.

In the present invention, measurement data of physical quantities relating to energy consumption of each facility measured by the measuring instrument is collected by the measurement data collection means. The collected measurement data is processed by the data processing storage unit into data capable of displaying the energy consumption for each preset management unit such as a department, a line, and equipment, and then stored in the data processing storage unit. The data stored in the data processing storage means is displayed on the display means. Therefore, detailed data on energy consumption can be obtained for each management unit, which is useful for grasping the management unit requiring a measure for energy saving, and clarifying the effect after executing the measure.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the data processing and accumulating means includes at least a predetermined time period of energy consumption from a start or a stop set for each of the management units. Is accumulated as data that can be monitored at predetermined time intervals useful for knowing the energy consumption trend in each of the management units. Note that "monitorable" is not limited to the case where the data can be directly viewed on the display, but includes the case where the data can be viewed only with the printed data.

Therefore, in the present invention, it is necessary to determine whether or not the operation of the equipment is stopped or turned off immediately at the time of a break such as a lunch break or at the end of work, and to raise the temperature at the time of start-up (start-up). It is possible to grasp the time required to reach the target temperature in equipment such as a simple electric furnace.

According to a fifth aspect of the present invention, in order to achieve the third object, in the third aspect of the present invention, the data processing / accumulating means includes a target for each of the management units. Evaluation and determination of the target achievement status is performed based on the energy consumption and the actual energy consumption, and the determination result is stored as data.

In the present invention, for example, for each department, line, facility, or the like, which is a management unit, the evaluation and determination of the target achievement status is performed by the data processing and storage means, and the determination result is stored as data. Therefore, by observing the judgment result of the target achievement status, it is possible to easily grasp the management unit with the poor achievement status, and to take a timely energy saving measure by examining the cause thereof.

In the invention according to claim 6, a large number of measuring instruments for measuring a physical quantity related to energy consumption of each facility that consumes energy and measurement data collecting means for collecting measurement data of each measuring instrument are linked. In the system that manages energy consumption, the measurement data of each of the physical quantities sampled at predetermined time intervals by the measurement devices is collected by the measurement data collection unit, and a department, a line, and the like are collected based on the collected measurement data. Calculate data representing the energy consumption of each management unit preset for each of the management units, and achieve the target for each of the management units from the value and the target energy consumption preset for each of the management units. Judge the situation.

Therefore, in the present invention, the physical quantity relating to the energy consumption of each facility is sampled (measured) at predetermined time intervals by the measuring instrument, and the measured data is collected by the measured data collecting means. Based on the collected measurement data, data representing the energy consumption for each preset management unit, ie, for each department, line, or facility is calculated. Then, the target achievement status for each management unit can be easily grasped from the value and the target energy consumption for each management unit.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention embodied in one factory will be described below with reference to the drawings. As shown in FIG. 1, the energy management system includes various measuring instruments 1, a child sequencer 2, a parent sequencer 3, a collection personal computer (hereinafter, referred to as a collection personal computer) 4, a server, and an energy measurement server as a data processing storage unit. 5,
A management personal computer (hereinafter, referred to as a management personal computer) 6 and a terminal personal computer (hereinafter, referred to as a client) 7 as a terminal device are provided.
Child sequencer 2, parent sequencer 3, and collection personal computer 4
Constitutes a measurement data collection unit that collects measurement data of each measuring instrument 1.

Various measuring instruments 1 measure physical quantities relating to energy consumption. Examples of the various measuring instruments 1 include an ammeter, a gas meter, a water meter, a temperature sensor, a steam meter, an air meter, and the like. There is.

The child sequencer 2 collects the output data of the measuring instruments 1 at predetermined intervals (for example, every 5 seconds), and is connected to each measuring instrument 1 via a signal line 8. The parent sequencer 3 collects data from the child sequencer 2 at predetermined intervals (for example, every 5 seconds), and is connected to the child sequencer 2 via the network 9. The parent sequencer 3 has a maximum of 1000 via a plurality of child sequencers 2.
It is possible to collect data of one measuring instrument 1.

The parent sequencer 3, the collecting personal computer 4, the energy measuring server 5, the managing personal computer 6, and the client 7 are connected to each other via a LAN 10 as a network. Ethernet (registered trademark) is used for the LAN 10.

The collecting personal computer 4 collects data from the parent sequencer 3 at a predetermined interval (for example, every 5 seconds) and registers the data in the energy metering server 5.
The registration of the data is performed at intervals longer than the data collection cycle, for example, at intervals of 5 minutes in principle. The collection personal computer 4 can collect data of up to 4000 measuring instruments 1 by one,
That is, the data of the four parent sequencers 3 can be processed. The collection personal computer 4 has a monitor display 4a as a display means, and can display the operating status of the system.

The energy metering server 5 processes the data registered by the collecting personal computer 4 and holds (accumulates) various master information for displaying in various forms as a database file. The energy metering server 5 has a function of a Web server.

As the master information, a system type code,
There are a hierarchy type code, a measurement type code, a measurement item code, a unit conversion code, and the like for each system. The system type includes a power system, a gas system, an air system, a steam system, a water system, an organization system, and the like, and the hierarchy type includes company, business division, building, line, power, and the like. Measurement types include power, air,
There are types such as steam, gas, temperature, and water. In the case of power, measurement items include power (integrated), current (instant), and voltage (instant)
There is. The unit conversion code may be, for example, the amount of power,
There are conversion constants for converting to crude oil amount, CO ₂ emission amount, and the like.

The master information includes grouping data, target value data, historical monitor data, and target value achievement status data. The grouping data is data indicating which organizational system and which management unit each measuring instrument 1 belongs to, and the target value data is the target for each department, line (production line), equipment constituting the line, etc., which is the management unit. Value data. The historical monitor data is data for securing the historical monitor function, and the energy consumption for each management unit such as a department, a line, and the equipment constituting the line, is set at the start or stop which is set in advance for each management unit. This is data to be displayed at predetermined time intervals useful for knowing the energy consumption trend for a predetermined time from time. The shorter the predetermined time interval is, the finer the analysis can be made, but the interval is preferably 15 minutes or less, more preferably 5 minutes, in view of the number of data and the capacity of the server. In this embodiment, the interval is set to 5 minutes.

The target value achievement status data is data for determining how much the actual energy consumption is relative to the target energy consumption for each management unit. In this embodiment, the ratio of the actual energy consumption to the target energy consumption is 90% or less,
90-100%, 100% or more and less than 110%, 110%
The evaluation is performed in the above four stages. Then, the energy metering server 5 performs four-stage evaluation judgment of the target achievement status from the target energy consumption and the actual energy consumption for each management unit, and accumulates the judgment results as data.
When the target achievement status data is monitored by the management personal computer 6 and the client 7, the mark ◎ indicates that the actual energy consumption rate is 90% or less, and the mark で は indicates that the actual energy consumption rate is 90 to 100%.
The mark is displayed as a mark when the value is 100% or more and less than 110%, and as a mark when the value is 110% or more. When the target value has not been set, the target value is indicated by an asterisk. The value indicating the ratio of the actual energy consumption, which is used as a criterion for the four-stage evaluation judgment, can be changed by the management personal computer 6.

The management personal computer 6 performs maintenance of various types of master information of the energy metering server 5. The maintenance includes setting and changing the reference value of the various types of master information and changing the grouping data. The management personal computer 6 has a monitor display 6a.

The client 7 can monitor information on energy consumption stored in the energy metering server 5 using a browser. That is, the client 7 is not a dedicated terminal but a general personal computer having a browser.

Next, the operation of the energy management display system configured as described above will be described. Various measuring instruments 1 measure physical quantities related to energy consumption for 5 seconds. If an integrated value is required as a physical quantity, the integrated value for 5 seconds is used as the measurement data, otherwise, the instantaneous data is used as the measurement data. The child sequencer 2 collects the measurement data of each measuring instrument 1 at an interval of 5 seconds and stores the data together with the identification number of each measuring instrument 1 in a storage device. The parent sequencer 3 collects measurement data of each measuring device 1 from the child sequencer 2 at intervals of 5 seconds. And
The measurement data collected by the parent sequencer 3 is collected by the collection personal computer 4 at intervals of 5 seconds.

The measurement data collected by the collection personal computer 4 is collected for 5 minutes in principle and registered in the energy metering server 5 at 5 minute intervals. The energy metering server 5 aggregates the registered data of each measuring device 1 for each management unit set in advance by grouping, and the data to be integrated as the energy consumption (for example, the electric energy, the gas usage, etc.) The value summed for each management unit is stored in a storage area of the storage device set for each management unit. Also,
Data indicating energy consumption but not to be integrated (for example, temperature) is stored in the storage area as a value for each measuring instrument 1. Therefore, the measurement data of the physical quantity related to the energy consumption for each management unit is accumulated as the basic data. The basic data is accumulated for a maximum of one year, for example, and when the data amount becomes one year or more, thereafter, an update process is performed in which old data is sequentially deleted and new measurement data is added.

The energy metering server 5 calculates the historical monitor data for each management unit based on the measurement data registered every 5 minutes at intervals of 5 minutes and stores it in a predetermined storage area. That is, the measured data such as the amount of electric power that requires an integrated value is the value obtained by integrating the values for 5 minutes, and the measured data such as the temperature that requires the instantaneous value is the average value (or the maximum value) for 5 minutes. Is stored as The historical monitor data is accumulated, for example, in units of 5 minutes, in units of days, in units of months, and in units of years, and is accumulated for a maximum of 10 years. Data up to 5 minutes before the present time is sequentially stored.

The energy metering server 5 creates target achievement status data for each management unit based on the measurement data registered at 5-minute intervals. The target achievement status data is created in units of one day, and the data for the day is created based on the measurement data from midnight to the present time.

The energy metering server 5 is a client 7
The desired information is transmitted via the LAN 10 in response to a request from. The energy metering server 5 usually processes each data created based on the measurement data registered every five minutes from the collection personal computer 4 and transmits the processed data to the client 7, but the client 7 requests the real time monitor (real monitor). When there is an error, the measurement data of the measuring device 1 for which the real monitor is requested is received from the collection personal computer 4 not every 5 minutes but sequentially at a short interval of seconds or less, and the data is transmitted to the client 7. In addition, collection PC 4
Also, the measurement data of the measuring device 1 is sequentially collected not at every 5 seconds but at short intervals of seconds or less.

Then, the desired measurement data of the measuring instrument 1 is displayed in a graph on the monitor display 7a of the client 7 in real time as shown in FIG. The display of the graph is continuously displayed from the time at which the display is desired, the data from the present time to a predetermined time before is simultaneously displayed, and the change status can be understood at a glance. On the display screen 11 of FIG. 2, the measurement data of up to three measuring instruments 1 can be displayed at the same time. The use of the real monitor function is used for monitoring measurement data that needs to be grasped in real time, such as when a new equipment is introduced or when operation is unstable after maintenance and repair. When real monitoring is performed, it is also possible to display an alarm or generate an alarm sound when the monitored value exceeds a set value.

When using the historical monitor function,
For example, a display screen 11 shown in FIG. 3 is displayed on the display 7a of the client 7. Then, the user selects a management unit (organization) that he / she wants to see in the management unit selection unit 12. The display screen 11 shown in FIG. 3 includes a management unit selection unit 12 capable of selecting three stages of selection of a section, selection of a section, and selection of a process.
Shows a case where a department (manufacturing department) and a section (painting section) are selected.

The user selects the interval of the historical data in the target period selecting section 13 and sets the start date setting section 14.
, The start date is set, the data unit selection unit 15 selects the unit of the display data, and the energy type selection unit 16 selects the type of energy. When a display button 17 is clicked after selecting other predetermined items, a display screen 11 on which the history data of the energy consumption of the specified management unit is displayed as a graph is displayed on the display 7a as shown in FIG. appear. Each bar of the bar graph in FIG. 4 indicates the total power consumption of the coating section every 5 minutes. Although not shown, each bar graph is divided into the amount of use of each process constituting the coating section, and color-coded display is performed, and the color-coded display and the contrast display of each process are performed. Can be identified at a glance.

In the display screen 11 of FIG. 3, the raw value is selected as the data unit. However, when the cost is selected in the data unit selection section 15, the raw value is displayed, and when CO2 is selected, C is displayed.
It is displayed as a converted value of O ₂ (carbon dioxide) emission, and when a crude oil is selected, it is displayed as a converted value of the used amount of crude oil. In addition to electricity, gas, air, steam, and water can be selected in the energy type selection unit 16, and the usage of each can be checked. Since the target period selection unit 13 can select a day unit, a month unit, or a year unit, a desired display is selected and used according to the purpose. The data output button 1 is displayed on the display screen 11 of FIG.
8 Click CSV (Comma Separated Value)
Data can be downloaded in a format, and the data can be used for various analyses.

If the management unit selection unit 12 selects a process which is a more detailed management unit than the section, the energy consumption of each process can be individually displayed. As an example of using the target achievement status data of the energy metering server 5, there is a display screen 11 shown in FIG. The display screen 11 displays the energy consumption and achievement status for one week in each management unit in the form of a weekly report on the target achievement status display section 19. FIG. 5 shows the energy consumption (total amount) of the general affairs group (general affairs G) of the general affairs department displayed as a cost conversion value. The actual amount of daily usage for one week is displayed as a numerical value at the top, and below it, the achievement status is displayed with a mark indicating a four-level evaluation. Therefore, the target achievement status can be quickly determined by looking at the marks of the four-level evaluation. The display screen 11 in FIG. 5 shows a state in which the entire screen for one week is displayed. However, when the screen for confirming the target achievement status is displayed during the week, for example, on Thursday, data until Wednesday of the previous day is displayed. You.

The display screen 11 shown in FIG. 5 also plays the role of a cause report for abnormal values or poor results of the target achievement. In other words, the person in charge of each management unit examines the cause when an abnormal value occurs or the target achievement situation is poor, and describes the reason in the special note column that appears when the display screen 11 of FIG. 5 is scrolled down. To enter. The upper-level administrator checks it on the screen and checks the approver column 2
Enter a name in 0. When the name is entered in the approver field 20, the report to the upper-level manager and the confirmation processing are completed. Therefore, unlike the related art, a complicated and time-consuming operation of circulating a printed report in a department, entering necessary information, and obtaining a seal of approval of the administrator is not required.

When the user wants to grasp the energy use situation of the day, for example, the user can use the display screen 11 shown in FIG. The display screen 11 displays the energy consumption of the day together with a target value for each section, each section (group), and each process. On the display screen 11, the target value, the usage amount of the day, the usage amount of the previous week, etc. are displayed for the entire factory, department, section (group),
Displayed for each process. By scrolling the display screen 11 of FIG. 6, data of each unit, each section (group), and each process corresponding to each management unit are sequentially displayed. Departments such as the general affairs department that do not have a production line are displayed up to the section. Therefore, comparison between the department to which the user belongs and other departments can be easily performed. The display screen 11 is provided with a message display section (not shown) related to energy saving, following the data display section of each section, each section (group) and each process. Therefore, by displaying enlightenment items related to energy saving on the message display section, the user of the client 7 can be made aware of energy saving.

When setting or changing grouping information is performed by the management personal computer 6, the setting or change is performed, for example, on the display screen 11 shown in FIG. That is, the display screen 11 of the organization system of the system type is maintained. The organizational system is divided into divisions, departments,
Divisions (rooms, groups) and processes. And FIG.
(A) shows a state in which each step of one coating section of the section belonging to the manufacturing department is set. If a process is omitted or added, the process column is maintained. Although not shown, there is also a display screen for setting which process each measuring device 1 belongs to. When the number of measuring devices 1 is increased or decreased due to a change in the production line, or when the affiliation is changed, Maintenance of the display screen is performed. The historical monitor data, the target achievement status data, the energy use status data of the day, and the like are displayed in a display format set in advance on the screens of the displays 6a and 7a for each management unit set by the grouping. Therefore, the minimum unit of management can be one measuring instrument 1.

FIG. 7 (b) shows the display screen 11 when setting / changing the unit conversion data. As part of international measures to prevent global warming, regulations on carbon dioxide emissions have come to be enforced, and it is necessary to recognize the value of energy consumption as carbon dioxide emissions. A carbon emission conversion value is required. Also,
By expressing the amount of energy consumption as an actual cost in monetary value, the impact on each member of the organization will increase, so it is also possible to select the cost display, but the cost is Therefore, it is necessary to maintain the conversion constant because it fluctuates due to oil prices and crude oil prices. Therefore, a display screen 11 for setting / changing the conversion value as shown in FIG. 7B is provided. Although the converted value of the electric energy is displayed on the display screen 11 of FIG. 7B, the gas consumption, the air consumption, the steam consumption, and the water consumption are selected by selecting the measurement unit selection unit 21. Similarly, cost conversion, crude oil conversion, carbon dioxide conversion display columns are displayed,
Each conversion constant is set.

This embodiment has the following effects. (1) The measurement data relating to the energy consumption can be monitored via a network by a terminal device (client 7) having a browser instead of a dedicated terminal. Therefore, any member of the organization can freely grasp the data on the energy consumption, and it becomes easy to grasp the current situation when performing energy saving activities.

(2) Physical quantities (measurement data) related to energy consumption of each facility measured by each measuring instrument 1 can be monitored in real time. Therefore, it becomes easy to monitor the measurement data that needs to be grasped in real time, such as when the equipment is newly introduced or when the operation is unstable after maintenance and repair.

(3) An energy metering server 5 connected via a network (LAN 10) to a collection personal computer 4 for collecting measurement data of a large number of measuring instruments 1 for measuring physical quantities related to energy consumption of each facility. Data capable of displaying the energy consumption is stored for each preset management unit such as a line and a facility, and the stored data is displayed on a display unit. Therefore, detailed data on energy consumption can be obtained for each management unit, which is useful for grasping the management unit requiring a measure for energy saving, and clarifying the effect after executing the measure.

(4) The setting and change of the management unit can be freely performed by the management personal computer 6, and the client 7 does not need to be changed. Therefore, the organization is changed, the production line is changed, the measuring instrument 1 is added, Dealing with reductions becomes easier.

(5) One collection personal computer 4 allows up to four
That measurement data of 000 measuring instruments 1 can be collected,
Since the management unit 6 can freely set and change the management unit, the number of the measuring instruments 1 can be changed greatly, so that various system configurations from small to large can be easily achieved.

(6) LAN1 as the network
Since 0 is used, there is no danger of data being altered or leaked by a hacker or the like. (7) The energy metering server 5 obtains historical data (history data) relating to energy consumption for at least a predetermined time from the time of start or stop for each management unit and the energy consumption trend of each management unit. The data is stored as data that can be monitored at a predetermined time interval, for example, at an interval of 5 minutes, which is useful for example. Therefore, it is necessary to determine whether the equipment is shut down or turned off immediately after a break, such as during a lunch break, or at the end of work, and to determine the target temperature for equipment such as an electric furnace that needs to be heated at startup (at startup). Can be grasped, etc., and can be used effectively for planning energy saving measures.

(8) The energy metering server 5 evaluates and determines the target achievement status from the target energy consumption and the actual energy consumption for each management unit, and accumulates the determination results as data. Therefore, by observing the judgment result of the target achievement status, it is possible to easily grasp the management unit with the poor achievement status, and to take a timely energy saving measure by examining the cause thereof.

(9) The display screen 11 for displaying the target achievement status also serves as a cause report for abnormal values and poor results of the target achievement status. Therefore, a higher-level manager can complete the report / approval by confirming it on the screen and inputting the name in the approver column 20, and circulating a printed report like a conventional one in a department. After filling in the necessary items, a complicated and time-consuming operation of obtaining a seal of approval of the administrator is not required.

(10) The energy metering server 5 uses We
Since it has the function of the server b, the data of (3), (7), and (8) can be monitored using the client 7. Therefore, each of the effects (3), (7), and (8) can be further improved.

(11) Measurement data can be downloaded from the energy measurement server 5 in CSV format. Therefore,
The downloaded data can be easily analyzed and edited using general spreadsheet software.

(12) Display Screen 11 for Monitoring Data Concerning Energy Consumption Using Client 7
In addition, notices and enlightenment items related to energy conservation are displayed, so that each member of the organization can be made aware of energy conservation activities.

(13) Since the product production amount of the factory is also displayed on the energy consumption display screen, it is possible to easily understand the case where the product consumption is low but the energy consumption is large.

The embodiment is not limited to the above, and may be embodied as follows, for example. The network connecting the collection personal computer 4, the energy measurement server 5, the management personal computer 6, and the client 7 is not limited to the LAN 10, but may be the Internet. In order to prevent unauthorized intrusion into the company LAN from outside,
Preferably, a firewall is provided. An example of the firewall is a Web server with an authentication function server. In this case, even if the same company has branch offices, branches, factories, business offices, and the like over a wide range, there is no need to provide a dedicated line, and the system can be easily constructed. In addition, the construction of an energy management system including affiliated companies and subsidiaries becomes easy.

In the configuration of FIG. 1, the client 7 may not be provided, and instead, for example, a dedicated terminal may be provided for each department. In this case, a dedicated terminal is required when monitoring the measurement data and various data, so that the ease of use is reduced. However, unlike the past, it is easier to check the achievement status of the target for each management unit and to obtain historical data on energy consumption with high accuracy.
Useful for energy conservation planning. In addition, historical data and target achievement status data can be fully grasped by checking the data printed out on paper instead of monitoring it on a screen such as a display. A great effect can be obtained even if the printed matter is distributed to members of each department.

Instead of the configuration in which the energy metering server 5 previously obtains and stores historical data and target achievement status determination data for each management unit, a management personal computer 6
Alternatively, when a request for displaying historical data or target achievement status determination data is issued from the client 7, the processing of those data may be started and transmitted to the management personal computer 6 or the client 7 that has made the request.

The past unit conversion data may be stored together with the set date and time, and when the historical data is displayed, it may be displayed based on the conversion data at the time when the energy measurement data was collected. In this case, even if a conversion constant such as a crude oil price fluctuates, if the energy measurement data before the fluctuation is referred to, it can be displayed with the conversion constant at the time of measurement.

In the case where the number of measuring instruments 1 is small, a configuration may be adopted in which the data of each measuring instrument 1 is collected by one sequencer without providing both the child sequencer 2 and the parent sequencer 3.

The collection personal computer 4 and the management personal computer 6 may be shared by one personal computer instead of being provided separately. ○ When configuring a system using a LAN or the Internet for a plurality of factories located in remote areas, a collection personal computer 4 is provided for each factory, and an energy metering server 5 and a management personal computer 6 are provided in one place. It may be configured.

The layout of the display screen 11 for each data is not limited to that of the above-described embodiment, but may be changed as appropriate. For example, as a display screen for grasping the energy usage status of the day, by scrolling the screen, instead of a configuration in which the energy consumption data of a plurality of management units appear sequentially, an independent display screen is displayed for each specified management unit. It is good also as a structure which performs.

The evaluation of the target achievement status is not limited to the four-level evaluation, but may be the three-level evaluation, the five-level evaluation, or the two-level evaluation. The transmission and reception of signals between the child sequencer 2 and the parent sequencer 3 may be performed wirelessly.

The inventions (technical ideas) other than those described in the claims which can be grasped from the embodiment will be described below. (1) In the invention according to claim 3, the display means is a terminal device connected to the data processing storage means via a network and having a browser. In this case, any member of the organization can easily use the data relating to the energy consumption of the management unit to which it belongs, which has been freely processed by the data processing storage means, and the energy saving activities can be smoothly performed.

(2) In the invention according to claim 5,
The display means is a terminal device connected to the data processing storage means via a network and having a browser. In this case, any member of the organization can freely monitor the achievement status of the target of each management unit easily, easily grasp the management unit with poor achievement status, and take timely energy saving measures by examining the cause of it. It becomes possible.

(3) In the invention according to any one of claims 3 to 5, the management system sets on a data which of the set management units each measuring instrument belongs to. Means. In this case, it is possible to easily cope with the addition or reduction of the measuring instruments belonging to the management unit by changing the organization or the production line.

(4) In the invention according to any one of claims 1 to 5, the server performs data processing after receiving a data display request from the terminal device or the like. In this case, since the data as measured by the measuring device is stored, it is possible to analyze the energy consumption situation more finely.

[0073]

As described in detail above, according to the first and second aspects of the present invention, even if a dedicated terminal is not provided,
Data on energy consumption is freely available to anyone in the organization.

According to the third to sixth aspects of the present invention, the data relating to the energy consumption of each facility is stored in a management unit of a department, a line (production line), each process of the line, each facility, etc. We can grasp every time.

According to the fifth and sixth aspects of the present invention, it is possible to easily grasp the achievement status of the energy consumption target for each management unit.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an energy management system according to an embodiment.

FIG. 2 is a schematic diagram showing an example of a real monitor display screen.

FIG. 3 is a schematic diagram of a setting display screen of historical data display conditions.

FIG. 4 is a schematic diagram of a display screen of historical data.

FIG. 5 is a schematic diagram of a goal achievement status display screen.

FIG. 6 is a schematic view of a display screen of an energy use state.

7A is a schematic diagram of a display screen for changing grouping information settings, and FIG. 7B is a schematic diagram of a display screen for changing settings of unit conversion data.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Measuring instrument, 2 ... Child sequencer which comprises measurement data collection means, 3 ... Parent sequencer, 4 ... Similarly, collection personal computer, 5 ... Energy measurement server as a server and data processing storage means, 7 ... Terminal device Client, 10 ... LAN as a network.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Masaru Yamaguchi 2-1-1 Toyota-cho, Kariya-shi, Aichi Pref. Inside Toyota Industries Corporation (72) Inventor Teiji Araki 2-1-1, Toyota-cho, Kariya-shi Aichi Pref. Inside Toyota Industries Corporation (72) Inventor Terushi Kitajima 2-1-1 Toyota-cho, Kariya City, Aichi Prefecture Inside Toyota Industries Corporation (72) Inventor Yasuhiro Higuchi 2-1-1 Toyota-machi, Kariya City, Aichi Prefecture Shares Inside Toyota Industries Corporation (72) Inventor Masataka Kuroda 3-5-5 Kyoei-cho, Obu City, Aichi Prefecture Inside 19 Tokai Systems Research Institute Co., Ltd. (72) Inventor Tetsuya Kato 8--30 Takaramachi, Kariya City, Aichi Prefecture Toyota F-term (reference) in Hi System Co., Ltd. 5G064 AA04 AB03 AC01 AC08 AC09 BA02 BA07 CB01 DA05 5H223 AA05 BB08 CC03 DD09 EE06 EE08

Claims (6)

[Claims] 1. A large number of measuring instruments for measuring a physical quantity related to energy consumption of each facility that consumes energy, measurement data collecting means for collecting measurement data of each measuring instrument, and a network for the measurement data collecting means via a network. A server that processes the data collected by the measurement data collection means, stores the processed data, and has a Web server function. The server is connected to the server via the network, and a browser is connected to the server. Energy management system provided with a terminal device provided. 2. The energy management system according to claim 1, wherein the server performs a process for displaying the measurement data on the terminal device in real time. 3. A large number of measuring instruments for measuring physical quantities related to energy consumption of each facility that consumes energy, measurement data collecting means for collecting measurement data of each measuring instrument, and a network with the measurement data collecting means. Data processing storage means for processing and storing data collected by the measurement data collection means into data capable of displaying energy consumption for each preset management unit such as a department, a line, and equipment; An energy management system comprising: a display unit that displays data stored in the data processing storage unit. 4. The data processing / accumulating means obtains historical data relating to energy consumption at least for a predetermined time from a start or stop time preset for each of the management units and an energy consumption trend in each of the management units. The energy management system according to claim 3, wherein the energy management system stores the data as data that can be monitored at predetermined time intervals that are useful for monitoring. 5. The data processing and accumulating means performs an evaluation judgment of a target achievement status from a target energy consumption and an actual energy consumption for each of the management units, and accumulates the judgment result as data. The energy management system according to claim 4. 6. A system for managing energy consumption by linking a large number of measuring instruments for measuring physical quantities related to energy consumption of each facility that consumes energy with measurement data collecting means for collecting measurement data of each measuring instrument. In, the measurement data of each physical quantity sampled at a predetermined time by the measuring device is collected by the measurement data collection means, and based on the collected measurement data, a department, a line, equipment, etc. are preset. Energy consumption management for calculating the data representing the energy consumption for each management unit, and determining the target achievement status for each management unit from the value and the target energy consumption previously set for each management unit. Method.