JP2003050626A - Energy control system with function of navigation conservation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To develop a device targeting energy saving or cost reduction at the time of remotely monitoring or remotely controlling energy such as electricity, gas, water, and oil. SOLUTION: Energy information transmitted from a user who is present at a remote place is data-analyzed, and the operation method or contract classification of the device which is the most suitable for energy saving is automatically discriminated and fed back. Also, the past result values are preliminarily inputted, and an energy saving target value is updated every day, and accumulation with respect to the target value is displayed with energy amounts or sum.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for quantitatively measuring the amount of energy used and a method for verifying an energy saving effect in an apparatus that promotes energy saving of electricity, gas, oil, water and the like.

[0002]

2. Description of the Related Art Conventional measurement for the purpose of energy saving is mostly related to electricity and only measures the amount of electric power and the maximum demand power (demand value). This device has not been used for energy saving. Even if energy is measured and recorded, most of the devices cannot be compared with the past, so the data has not been effectively utilized for energy saving.

[0003]

Most of the conventional monitoring devices do not measure the energy consumption centering on electricity and gas, and do not show the amount of money because they do not show the energy saving awareness to the energy manager. It's a reality. In promoting energy conservation activities, which is a national policy, not only energy managers but all those who benefit from energy are required to participate, and a management system considering energy conservation that is easy for anyone to understand is required.

[0004] Particularly in buildings and factories where the amount of energy used is large, there are generally managers related to utilities such as electric power. However, it is necessary to grasp the energy use situation in real time during a period when the fluctuation of energy use is large. It is generally difficult because of the fact that the energy use site and the manager are systematically separated, and also in terms of cost management. At present, there is no energy consumption monitoring device suitable for the purpose of energy saving. The same applies to a device that comprehensively controls when energy usage is at a peak.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and generally monitors the power usage state and the gas usage state in buildings, hotels, factories, etc. where the amount of energy used is large. We provide an energy controller with an energy-saving navigation function suitable for
The purpose is to perform control and energy-saving diagnosis from a remote location.

The present invention has been devised to solve such a problem. The unit price of electricity, gas, oil, water, etc. and the last year's actual value and reduction target value are input in advance, and the achievement rate to the target is achieved. The feature is that the reduction amount is displayed. In addition, for gas charges for large buildings, the basic charge is often determined from the maximum amount used per hour, and the pulse signal from the transaction meter of the gas company is calculated and captured, and the amount used per hour is displayed as a graph. The system is designed to give warnings and load shedding when the target value is exceeded by prediction. At the time of warning, it is possible to switch the screen to the energy-saving manual or to urge voice-saving actions.

The usage amount can be displayed as a real number for each energy type, but can also be displayed as a charge. It is possible to more intuitively understand the usage state by converting the charge into a charge and displaying the charge instead of displaying the charge with a real number.

The means for measuring the amount of energy used is not particularly limited, and various conventionally used measuring methods can be appropriately used. For example, as a method of detecting a digital value when measuring power, the detected voltage and current are digitally converted, and the instantaneous power amount is obtained as an average value for each constant time width by a microcomputer.
The amount of energy can also be calculated by integrating this instantaneous electric energy.

The display method by the graph is not particularly limited, but the display period can be displayed for at least one unit period such as the actual result on the current day, the actual result on the previous day, the actual result on the current month, and the actual result on the year. When you go to, you can switch and display each.

The graph type can be displayed as a line graph or a bar graph. When the bar graph is displayed by the actual energy amount and the target energy amount at the end of integration, the target bar graph and the actual energy amount bar graph at the time of display are clearly contrasted in color or the like, for example, filled with a blank. The length of the used energy amount bar graph is the length at which the ratio of the actual energy amount to the target energy amount matches the ratio of the length of the target bar graph. Can be displayed with. For example, when the data for the previous day and the data for the current day are displayed in an overlapping manner, if the overexposed portion is a red bar graph, it is possible to easily compare the energy saving measures.

Further, when the above-mentioned graph is displayed as a line graph of energy amount, the line graph of the target integrated amount from the start of integration to the end of integration is previously represented for the monitoring time zone, and the integrated result is obtained. Each time it is performed, the target line graph can be displayed by rewriting it into the actual line graph. With this display, the display line graph is changed at the stage when the actual result is input, so that the actual result and the target can be easily compared. The polygonal line between the target and the actual result can be displayed in different colors, or the polygonal line such as a dotted line and a solid line can be displayed so that the difference can be easily understood. The target line graph and the actual line graph may be displayed side by side, or may be displayed by other means. Further, the comparison result can be displayed by color, sound, characters / symbols / marks, blinking of display, or a combination thereof.

The above-mentioned monitoring time period is a time period during which energy consumption becomes active in buildings, factories, etc. and monitoring is required, and this monitoring period is parallel to energy use by eliminating monitoring personnel. So that monitoring work can be performed.
The determination of the monitoring time period is arbitrary, and may be appropriately determined according to the energy consumption situation. Normally, the demand time for determining the contract fee is 30 minutes for electric power and 1 hour for gas, so that both are measured and controlled in synchronization with the measurement time limit of the energy supply company.

An energy controller having an energy saving navigation function according to the present invention comprises a measuring section for detecting the usage amount of electric power, gas and the like and a display section for displaying a monitoring result of the usage amount, wherein the measuring section is for the usage The detection unit for detecting at least the instantaneous energy amount of the amount and the transmission unit for wirelessly or wiredly transmitting the detected value, and the display unit stores at least the instantaneous power and the target value of the energy amount of the gas or the like as the receiving unit. And a means for comparing and displaying the target value with at least the energy amount, and the display means displays at least the comparison between the energy amount and the target value by a graph. The integration of the instantaneous values for obtaining the amount of energy can be performed on the display unit or the detection unit.

When a plurality of the measuring units are provided and the amount of energy used for each measuring unit is displayed on one display unit, the amount of energy used detected by the plurality of measuring units is displayed on the display unit. A switching means is provided for each measuring section.

The determination of the energy saving target value is based on, for example, the type of contract electricity of the building and the type of gas contract, and when there are multiple measuring units, the monitoring time zone, weekday / holiday type, etc. are considered for each measuring unit. Then, set the immediate target value and upper limit value.
After that, it may be changed considering the actual results. In addition, when the price is displayed, it becomes complicated due to the contract with the energy supply company and the contract with the tenant, but basically, the unit price can be arbitrarily set. When using the wireless communication means, normal radio waves are used. However, the present invention is not limited to this, and it is possible to use the most suitable transmitting means in view of the situation at the site, such as far infrared rays or a wired system.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the accompanying drawings by an embodiment implemented by energy management of a building.

In the energy control system of this embodiment, a data logger and a pulse detector are installed in the electric power meter, gas meter, water meter, etc. in FIG. 1, and then data is transmitted to the energy controller. The amount of energy that changes momentarily is C in the energy controller
Calculated by PU and stored in memory. The accumulated data is regularly transferred to the center via a modem.

In the energy controller, predictive calculation is performed on a preset target value, and when it is predicted that the target value will be exceeded, an alarm or load is cut off to control the target value so that it can be achieved.

At the center, pattern analysis is performed based on the transferred data, and the lowest cost and most efficient energy combination and operation method, and the contract type with the energy supply company are determined.

Although the above contents are fed back to the user side, when the facility manager is absent on the user side and when it is predicted that the energy saving target value will be exceeded, the center side gives an alarm or a cutoff signal. Control to achieve the energy saving target value.

FIG. 2 is a block circuit diagram for explaining the outline of the main body of the display unit of the energy controller, but it is for the case where the data from each meter is wirelessly received in the field.

When the radio receiving circuit 3 of the display unit main body 1 receives a signal from each meter, the signal is given to the arithmetic unit (CPU) 4 of the personal computer 2. The CPU retrieves necessary data (for example, a charge conversion unit for the amount of use) from the hard disk or other memory 5, gives a calculation result as described below to the display 6, and updates the data stored in the memory 5 or the like. To do. Reference numeral 8 shown in FIG. 2 denotes a receiving antenna, and 7 denotes a speaker or a buzzer.

FIG. 3 shows an example of the result screen of the day when the calculation result of the personal computer 4 is displayed on the liquid crystal display 6. Although this is a correlation screen of electric power and temperature, the amount of gas and water used is adjusted so that it can be synchronized with the unit time (for example, 30 minutes) of the energy supply company. Therefore, facility managers should be able to perform various energy saving actions such as squeezing the outside air damper while watching the screen, changing the setting of cold water temperature, and suppressing the opening of the refrigerant vane. Since the purpose is to raise awareness, an energy saving manual is also displayed as shown in Fig. 4 along with the warning. On the display, the screen is switched for each energy, and the cumulative usage amount of each day's actual, current month's, and year's actual is displayed. The facility manager's enlightenment can be indicated by displaying in, along with notification by alarm sound, and automatic control. It is worth noting that the daily usage amount is input up to the target value, and that careful energy saving results can be accumulated by paying attention not to give the daily warning.

FIG. 5 shows the actual result screen for the current month, which is an example of the amount of gas used. Basically, the energy saving target value C is set for the actual result B in the same month of the previous year, so the black part A
Even if it is in the middle of the month, if the prediction calculation exceeds the target value, the warning and automatic control will be performed like electricity. Since the bar graph displays the actual results and the targets in an overlapping manner, the comparison can be grasped with the lapse of time, and therefore it is expected that the facility manager manually adjusts the load outside the control target.

The yearly performance screen always displays the 13 months up to the current month. When a new month is entered, the oldest month is deleted and the current month can be compared with the past 13 months including the same month of the previous year. I chose As will be easily understood from the above description, the energy controller according to the present embodiment allows the facility manager to grasp the usage status of all the energy used in the building, and to investigate the cause of the increase / decrease, Necessary measures can be taken promptly, which can greatly contribute to cost reduction and resource protection. The above description is for illustrative purposes only, and should not be construed as limiting the present invention by these measuring methods and arithmetic methods.

[0026]

[Effect of the Invention] The present invention is effective for reducing carbon dioxide gas by using it as a controller for enlightening and promoting energy conservation, because the past performance comparison is displayed not only as a percentage but also as a monetary amount by collecting each month. . Conventional demand controllers were used on site only during peak energy usage in summer and winter, but the cumulative usage is automatically created by combining the usage of gas, oil, water, etc. into a single device. This enables comprehensive energy control. Until now, there were many energy monitoring devices, but there was no load shedding function, making it impossible to compare past results on the same screen. Therefore, the effect of the present invention is the "maximum energy saving effect" because the automatic control of energy saving and the energy saving enlightenment of the energy manager can be realized together.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an energy control system having an energy saving navigation function according to an embodiment of the present invention.

FIG. 2 is a block circuit diagram for explaining an outline of a display unit of the energy controller according to the embodiment of FIG.

3 is a diagram showing an example of a screen on which the display of the display unit in FIG. 2 displays the actual results of power consumption on the day.

FIG. 4 is an example of a screen at the time of an alarm in which the target value excess is predicted when the display of the display unit in FIG.

FIG. 5 is a diagram showing an example of a gas usage amount current month display screen of the display unit of FIG. 2;

[Explanation of symbols]

1 Display unit body 2 personal computer 3 Radio receiver circuit 4 Operation unit (CPU) 5 memory 6 display 7 buzzer 8 receiving antenna

Claims (4)

[Claims] 1. An energy controller that measures the amount of electricity, gas, oil, water, etc. used, compares it with past actual amount of use, and issues an alarm or load shedding when the preset energy saving target value is exceeded. . In addition, the data accumulated in the device is transmitted to the monitoring center via a telephone line or power line, and the cheapest contract method and energy-saving operation method are automatically selected based on the usage status, and the user can select the energy intensity, daily load curve, etc. An energy control system with an energy-saving navigation function that gives guidance by sending. [Claim 2] A function for converting the amount of electricity, gas, oil, water, etc. used by inputting an arbitrary unit price and displaying / printing out an increase / decrease value and an excess / deficiency amount with respect to a preset target value Energy saving controller. 3. An energy-saving navigation that issues an alarm or a load cutoff signal when the indoor values measured by temperature sensors and carbon dioxide concentration sensors installed both indoors and outdoors exceed preset upper and lower limits. Energy controller with functions. 4. Energy with an energy-saving navigation function that displays and prints out energy intensity and carbon dioxide emissions based on the accumulated data while measuring the usage of electricity, gas, oil, water, etc. A system that calculates the basic unit and carbon dioxide emissions while remotely monitoring the energy as well as the controller.